First, be very careful “directing” when you write. Any direction you do write, should move the story forward, otherwise, don’t use it. The “directions” you write are going to be rewritten any way, by you, or by another writer once your screenplay is optioned/purchased. They will be rewritten because the director will collaborate with the writer on writing the shooting script, which is considerably different than the spec script. Although it’s acceptable, do not break dialogue from one page to the next, for any reason. The reason for this is that those who read your screenplay usually have several screenplays setting on their desk and/or nightstand, in line to be read. Readers must move fast. Many readers skim and don’t read every word. Many readers also look for certain elements in the screenplay without reading the entire script. To have a break in dialogue from one page to the next causes the reader to slow down. It is like hitting a bump in the road with your bicycle. It can jar you and throw off your focus. Always strive to make your screenplays reader friendly. Strive to leave more white on each page than black. If you do this, you enhance your chances of pleasing a reader, and getting your script sent to the next level.
Donald L. Vasicek Olympus Films+, LLC
The Zen of Writing and Filmmaking