Documentaries frequently seem improvised, which may make a directing plan seem pointless. Think of it instead as an important plank in your all-important development work before you leap into the fray. Much of your true directing will result directly from your preproduction preparation.
Plan multiple coverage of anything vital, such as expository information crucial to the coherence and impact of your story. Some reminders:
Have you decided,
● Who you will film, have you secured their agreement, and is “informed consent” required?
● Who will be your central character(s) and why?
● What metaphoric role best fits each member of your cast?