Shaping an Idea Into a Script

Start smaller than you think

Your first idea is probably too big. That's normal. Ambition is good; a car chase on a phone budget is not. The trick is to keep the feeling of the idea and shrink its footprint. A story about grief can happen in one kitchen. A thriller can happen through one locked door. A comedy can live entirely in a queue.

Use the "three constraints" test before you write a word: one or two locations you can access for free, two or three characters played by people you know, and a running time under five minutes. If your idea survives those limits, it's a first film. If it doesn't, keep it in the back of the notebook for later.

Write the logline

A logline is one sentence that says who wants what and what stands in the way. "A night-shift cleaner finds a voicemail meant for someone who died in the building" is a logline. "A film about loneliness" is a theme. You need the logline first because every later decision, from casting to cutting, gets measured against it.

Blake Snyder's Save the Cat! popularised the idea of testing your logline on friends before writing. Try it. If someone asks "and then what?", you're onto something.

Use screenplay format, even for a short

Screenplay format looks fussy, but it's a planning tool in disguise. Scene headings like INT. KITCHEN – NIGHT tell everyone where and when you're shooting. Action lines describe only what the camera can see and hear. Dialogue sits in a narrow centred column. In standard format, one page roughly equals one minute of screen time, which helps you judge length before you shoot.

You don't need paid software. Free options include Trelby, the web version of WriterDuet, or plain text written in the Fountain syntax, which many apps can convert into a properly formatted script. Syd Field's Screenplay remains a useful primer on structure if you want more depth.

Give your short a shape

Even a two-minute film benefits from a beginning, middle and end. Set up a character and what they want. Complicate it. Change something by the last shot. The change can be tiny: a look, a decision, a door left open. What matters is that the person at the end isn't quite the person at the start.

Read your draft out loud. Dialogue that looks fine on paper often sounds stiff when spoken. Cut every line an actor could replace with a look. Beginners almost always over-explain; trust your audience.

From script to shot list

Once the script is locked, go through it scene by scene and write down every shot you need. Number them: 1A wide of kitchen, 1B close-up of phone, 1C over-the-shoulder on Maya. Note the framing, any camera movement and who's in it. This is your shot list, and on the day it's your lifeline.

Some directors also draw storyboards. Stick figures are fine. The point isn't art; it's thinking through where the camera goes before ten people are waiting for you to decide.

Plan a realistic shooting day

Group your shots by location and by camera direction, not by script order. If three scenes happen in the kitchen, shoot them all together. If six shots face the window, do them before turning the camera around. Beginners can expect to get through roughly two to three script pages in a full day; plan for less, not more.

Write a simple call sheet: address, start time, who's needed when, what to bring and where the nearest toilet is. Feed people. A pot of pasta does more for crew morale than any speech.

Paperwork you shouldn't skip

Ask anyone who appears on camera to sign a simple release giving you permission to use their image. Ask before filming in shops, cafés or private homes. If you're filming in a public place, check your local council's rules; many allow small handheld crews without permits, but some don't. Use music you have the rights to, or tracks from free libraries with clear licences.