Type the scene heading in all caps underneath this at the very beginning of your screenplay. Place the scene heading, otherwise known as the "slugline," flush left of your left margin. The scene heading will describe where the scene is taking place and sometimes at what time of day it is taking place. For example a slugline can read, "ANTIQUE STORE-CLOSING TIME-LATE AFTERNOON".
Start on the right hand side of the page and write the action for the scene, typing all the way across the page. The action is not indented but is written across the span of a page, line upon line, until the action is finished. The type is single-spaced and uses both upper and lower case letters. Action will look something like this, "Man, Franklin Merle, 64, scribbles something on a sheet of paper, tallying up his sales for the day. Doorbell rings and Franklin looks up to see a young woman, Tammy Merle, 31. Both stare at each other, quiet."
Type the characters name in all caps 3.5 inches from the left margin to indicate that they will be speaking. Underneath the name (with one space above to make room for the parenthetical) make a 1-inch indentation from the left and 1.5 indentation from the right for dialogue. This space is used only when a character speaks. Create natural dialogue, as though it were a real person speaking. It should flow as it would in a normal conversation. For example, dialogue could read, "Tammy. What are you doing in my store? I thought I told you to never come around here again."
Type the parenthetical 3 inches from the left margin and 3.5 inches from the right margin. It will be spaced directly under the name and just to the right of it. The parenthetical gives specific directions to the actor as they are saying their lines. For example, if the character is tired you may want to indicate in parentheses (sleepily).
Type the editing directions next to the left hand margin in all caps. The transition will explain to the film editor how a scene will end or begin such as "CUT TO," "DISSOLVE TO," or "FADE TO." Also, next to the left hand margin, type in what kinds of shots are being made throughout the scene. The shot may change several times throughout the scene with directions such as "ANGLE ON," "EXTREME CLOSE-UP," or "PAN TO."