Make a storyline based on the concept of the movie you want to write about. Usually, a one- to three-page synopsis and a one- to three-sentence logline are also made to guide you on making your movie script descriptions. They help you keep the right flow for the story being developed into a full-fledged script. The storyline is formatted like a short story, but without flowery words used to subjectively describe scenes and events. A storyline is straight to the point and only requires objective descriptions.
Make your sequence guide and sequence treatment. A sequence is a series of scenes constituting a single and continuous episode or turn of events situated in one particular location. The sequence guide works like an expanded storyline utilizing the same format as the actual screenplay, but the scene descriptions are still very concise and they only present short summaries of the sequences. The sequence treatment works like an expanded sequence guide and almost a script, but still without the dialogue included in it.
For the sequence treatment, provide a more detailed description for each turn of event or scene in every sequence using paragraph form. Use simple sentences and format your descriptions in present tense as a script’s standard requires the use of this tense. Your script descriptions must include actionable verbs describing what happens in each scene. Include the general and/or more detailed setting, location, props, costumes, time frame and other elements that are crucial to letting the reader accurately visualize what and how the scene should look.
Write your script based on your sequence treatment. You actually have draft movie script descriptions already through your initial treatment. At this stage, polish them according to the dialogue you incorporate in every sequence of the script.
Read your script from start to end and edit any part requiring revision or correction. Common issues addressed during this proofreading stage include editing typographical errors, overlooked problems in subject-verb agreement, spellings of names and places, more fitting adjectives that can better suit specific descriptions in certain scenes and complicated sentences requiring more simplified formatting or rewriting.