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How to Write a Screenplay: Step-by-Step Guide for Beginners

Learn how to write a screenplay from first idea to finished draft: a logline formula with examples, three-act structure, correct format and page count.

Edited by Alex Darke  ·  July 22, 2024  ·  11 min read

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To write a screenplay, start with a one-sentence logline, build a short outline around three acts, write a fast and imperfect first draft in standard screenplay format, then rewrite it. A feature script runs about 90 to 120 pages, and most beginners who finish a draft do it by treating the first pass as a rough draft rather than a finished piece.

This guide walks through each stage in the order you will actually do it, with a logline formula and examples (or try our free logline generator to get a first draft), the format rules that get a script taken seriously, and the mistakes that sink most first scripts.

Step 1: Start with one idea you can finish

Pick a story you can actually produce. If you are an indie filmmaker planning to shoot your own script, this matters more than anything else in this guide. A story with a car chase, a crowd scene and a helicopter will stay on the page forever. A story set in two locations with four characters might get made next spring.

Good ideas usually come from a situation, not a theme. "A woman has to get her father's ashes across the country in a week" gives you a character, a goal and a clock. "A film about grief" gives you nothing to write. Ask three questions of any idea before committing:

  • Who is the main character, and what do they want right now?
  • What stands in their way?
  • What happens if they fail?

If you can answer all three in a sentence, you have a logline. That is the next step.

Step 2: Write your logline

A logline is a one-sentence summary of your film that names the protagonist, their goal, the obstacle and the stakes. Write it before you outline, because it forces you to find the center of the story. Producers, agents and contest readers also see it before they see anything else, so it earns its keep twice.

A logline formula that works

Fill in this template, then trim it:

When [inciting incident], a [flawed, specific protagonist] must [goal] before/or [stakes or antagonist].

Some versions of the same idea:

  • Thriller or action: "A [protagonist] trapped in [place] must [stop antagonist] before [deadline]."
  • Drama: "After [loss or change], a [protagonist] must [goal] or lose [what matters most]."
  • Comedy: "A [type of person] who [flaw] is forced to [situation that makes the flaw hurt]."
  • Horror: "When [ordinary event] unleashes [threat], a [protagonist] must [survive or escape] before [rule or deadline]."

Logline examples

These are written in the formula above and are good models to study:

  • Jaws: When a great white shark begins killing swimmers at a New England beach town, a police chief who is afraid of the water must hunt it with a marine biologist and a salty fisherman before the summer crowds arrive.
  • Die Hard: An off-duty New York cop trapped in a Los Angeles skyscraper on Christmas Eve must stop a gang of armed thieves posing as terrorists before they kill the hostages, including his estranged wife.
  • Get Out: A young Black photographer who meets his white girlfriend's family for the first time discovers that their warm welcome is hiding something horrifying.
  • Star Wars: A farm boy on a desert planet teams up with an old knight and a smuggler to rescue a captured rebel princess and destroy an enemy superweapon before it wipes out the rebellion.
  • To Kill a Mockingbird: In Depression-era Alabama, a small-town lawyer defends a Black man falsely accused of rape while his children learn about prejudice from the people around them.

Notice what each example shares: a specific protagonist, a clear goal, and a threat with a clock or a cost attached. Get the facts of your story exactly right, too. Readers notice when a logline misdescribes its own premise.

Logline mistakes to avoid

  • Using character names. "A detective" tells the reader more than "Dave."
  • Describing the premise instead of the conflict. "A story about two sisters" is a topic, not a logline.
  • Burying the stakes. If nothing is at risk, there is no story.
  • Running too long. Aim for 25 to 40 words, one sentence.
  • Skipping irony. The best loglines contain a built-in tension: a cop who cannot leave the building, a hero who fears water.

Write ten versions. Read them out loud. The best one is usually the one that makes someone ask "and then what happens?"

Step 3: Build a treatment or outline

A treatment is a prose summary of the story, usually one to five pages, that reads like a short story in the present tense. An outline is a list of scenes or beats. You do not need both. Choose whichever helps you think, but do one of them before you write FADE IN.

For a first script, a simple three-act structure is enough:

ActWhat happensRough page range (feature)
Act 1: SetupShow the hero's ordinary life, then something disrupts it. The hero commits to a goal.Pages 1 to 25
Act 2: ConfrontationThe hero chases the goal and things get harder. A midpoint twist shifts the stakes. The hero hits their lowest point.Pages 25 to 85
Act 3: ResolutionThe hero makes a final, decisive choice. The central conflict is resolved.Pages 85 to 110

These page numbers are guidelines, not laws. They are useful because they stop you from spending 40 pages on a setup that should take 20. If you want a more detailed beat sheet, Save the Cat! by Blake Snyder is the most widely used template among working writers, and Story by Robert McKee goes deeper into why structure works.

Write the turning points first

Before you outline every scene, write down just five moments:

  1. The inciting incident. The event that knocks your hero off their path.
  2. The first act turn. The hero commits and cannot go back.
  3. The midpoint. A reversal or revelation that raises the stakes.
  4. The low point. Everything seems lost.
  5. The climax. The hero makes a choice that proves who they have become.

Fill in the scenes between them afterward. If you want to see how a good screenplay's turning points tie to who the lead is, our guide to character development techniques covers how a character's arc should line up with these beats.

Step 4: Build characters worth following

Every strong screenplay has a protagonist with a clear want and a flaw that gets in the way of getting it. Give your lead a specific goal in the first act (they want to win the case, find the sister, save the farm) and a deeper need that they do not understand yet. Your story is about the collision between the two.

Keep supporting characters useful. Each one should either help the hero, block the hero or force the hero to see something about themselves. If a character does none of these, cut them or merge them with someone else. For a full breakdown of backstory, traits, relationships and arcs, read our character development guide.

Step 5: Write the first draft

Now you write. Open your software, start at page one and keep moving. The goal of a first draft is to reach the end. You will fix it later.

Make every scene earn its place

Before writing a scene, answer three questions: what does the character want in this scene, who or what is in the way, and how is the situation different when the scene ends? If nothing changes, cut it. Enter late and leave early. Most scenes get better when you start on the second line of conversation and cut away before the goodbye.

Write dialogue people would actually say

Dialogue is not conversation. It is the part of conversation that matters, with the filler removed. Good dialogue is short, carries subtext (characters rarely say exactly what they mean), and sounds different for each speaker. A quick test: cover the character names. If you cannot tell who is talking, the voices are too alike. For more on finding a distinct sound, see our guide to developing your unique screenwriting voice.

Write action lines like a filmmaker

Action lines describe only what the audience can see and hear. Write in present tense, keep paragraphs to about four lines, and cut anything that cannot appear on screen. "Maria remembers her mother's kitchen" cannot be filmed. "Maria runs her thumb across a chipped blue mug" can.

Avoid directing from the page. Leave out camera moves and shot sizes unless one is essential to the story. A screenwriter's job is to tell the story, and the director and cinematographer choose how to shoot it. When you do get to the planning stage, our shot list guide shows how a finished script turns into a shooting plan.

Screenplay format basics

Format is how a reader knows you take the craft seriously. The rules are simple, and software handles them for you.

ElementHow it looks
Font12-point Courier (or Courier Prime)
Scene heading (slugline)All caps: INT. KITCHEN - NIGHT or EXT. PARKING LOT - DAY
ActionLeft-aligned, present tense, short paragraphs
Character nameAll caps, centered over the dialogue
DialogueDirectly beneath the character name, in a narrower column
ParentheticalShort note under the name, used sparingly, e.g. (whispering)
TransitionsCUT TO: and FADE OUT. appear rarely, right-aligned

The reason for 12-point Courier is practical: it makes one page roughly one minute of screen time, which is how producers estimate runtime and budget. Do not shrink the margins or change the font to fit more on a page.

How many pages should a screenplay be?

A feature screenplay should land between 90 and 120 pages. Comedies and horror tend to run closer to 90 to 100, dramas and action films can reach 110 to 120. A first-time writer sending out a script that runs past 120 pages is giving readers a reason to stop reading. Short film scripts are typically 5 to 15 pages. A one-hour TV pilot runs about 55 to 65 pages.

Screenwriting software

You need something that formats for you. These are the common choices:

  • Final Draft is the industry standard and the most common format in professional production offices. The current version is Final Draft 13.
  • WriterDuet has a free tier and strong real-time collaboration, which is handy for writing partners.
  • Arc Studio Pro has a free tier limited to a couple of screenplays at a time, and a clean modern interface.
  • Celtx is a longtime option that bundles scripts with production tools such as breakdowns.
  • Fade In and Highland are lower-cost alternatives; Highland is Mac only.
  • Fountain is not a program but a free plain-text format that many free apps can export to a properly formatted PDF.

Pricing and free tiers change often, so check each site before you buy. Any of these will get you a correctly formatted script. If you are writing something you plan to produce, Celtx and other pre-production tools can take the script into breakdowns and schedules later.

Step 6: Rewrite

The first draft is not the script. Let it sit for a week if you can, then read it from start to finish in one sitting, ideally out loud or with a friend reading the parts. Do your rewrites in passes, not all at once:

  1. Structure pass. Do the big turning points land where they should? Does the second act sag?
  2. Character pass. Does your lead want something in every scene? Does each supporting character have a purpose?
  3. Scene pass. Cut every scene that does not change the situation.
  4. Dialogue pass. Trim speeches. Remove lines that simply state feelings.
  5. Polish pass. Fix typos, check format, and trim page count.

Common first-script mistakes

  • Too much exposition. Characters who explain what both of them already know.
  • A passive hero. Things happen to the lead instead of the lead making choices.
  • Over-written action lines. Walls of text read slowly and look amateur.
  • Scenes with no conflict. Two people agreeing for three pages is not a scene.
  • A vague ending. The climax should be the hero's choice, not luck or a rescue.
  • Camera directions. Leave them to the director.

Get feedback that helps

Show the draft to two or three people who read scripts, not just your friends. A writing group, a trusted peer or a paid script reader can all work. Ask specific questions: where were you bored, where were you confused, and which character did you care about least? Do not defend the script while they answer. Write the notes down and decide later what to use.

Before you send it anywhere

Once the script is polished, register it before sharing it widely. In the U.S. that means a copyright registration with the Copyright Office, or the Writers Guild of America West script registry, which records the date of your work. Then match the script to the right target: contests, producers or agents who work in your genre, each with their own submission rules. Follow the instructions exactly.

If you plan to shoot the script yourself, this is also the time to think about budget and logistics. Our film budgeting guide and guerrilla filmmaking guide show how to cut a script down to something you can afford to make.

Where to go from here

Finish one complete script before you start another. The first one will be flawed, and that is fine. Read produced screenplays of films you love (many studios post them online each awards season), compare them to what ended up on screen, and keep a regular writing schedule. If a MasterClass-style course appeals to you, Aaron Sorkin's screenwriting class on MasterClass is a popular option for learning how a working professional thinks about dialogue and scene structure. A book like Story or Save the Cat! is cheaper and just as useful.

Start with the logline. Everything else gets easier once that one sentence is right.

Frequently asked questions

How do you start writing a screenplay?

Start with a logline, one sentence naming your protagonist, what they want, what stands in the way and what is at risk. Then build a short outline of the major turning points before you write a single scene.

How many pages is a screenplay?

A feature screenplay is usually 90 to 120 pages, and a short film script is usually 5 to 15 pages. Because of the standard format, one page runs about one minute on screen.

What is a logline in a screenplay?

A logline is a one- or two-sentence summary of your story that names the main character, their goal, the obstacle and the stakes. It is what a producer, agent or contest reader sees first.

What is the correct screenplay format?

Use 12-point Courier, scene headings in capitals such as INT. KITCHEN - NIGHT, short action lines in present tense, and character names in capitals above centered dialogue. Screenwriting software applies all of this automatically.

Do I need screenwriting software to write a screenplay?

You do not need to pay for it. Free options like WriterDuet and Arc Studio have free tiers, and the plain-text Fountain format works in many free apps. You do need something that formats correctly, so avoid a regular word processor.

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