4) Storyboarding

Storyboards are series of drawings that visually illustrate the sequence of shots and events in a film.
They contain details such as the shot/frame composition, edit transitions, what characters are in the frame, what dialogues are present, the camera angle and movement, and any other details that you can incorporate.They help plan your film, shot by shot and changes can be easily changed.

This is an example of a storyboard.