How To Write A Screenplay Writers Workshop basic guide, Edition 3. Designed as a fun, basic guide to get writers writing their screenplays immediately. This covers the basics of plot, characters, dialogue, and screenplay format. It was designed by Dorian Scott Cole, a development analyst, for Writers Workshop, L.A. in their program for high schools, with printing assistance from the American Film Institute. It is not intended to teach writing theory, but to be an addition to existing curriculum.