Build a treatment. Consider your treatment a beefed-up prose version of your outline, which reads more like a short story. If you’re shopping your script around, a treatment is what you might use to gauge interest; it can also be an excellent exercise to see if the story works the way you’re hoping it does in your head. Your artistic vision comes into play with the treatment, so build out your world and your characters as lush as you’d like. Learn more about writing treatments in this how-to guide.