For the weekend, a few tips for your first own film script -- this is about the basic question of how to actually tell a story cinematically, completely independent of structural topics such as turning points or character changes. For while a novel or a short story consists of words that can describe everything imaginable in detail and in nuances, in a film only the image and the sound exist. The audience can only ever know and understand what is actually shown on the screen or what comes out of the speakers.
As the linked article describes, one should therefore not think primarily in words when writing a script, but -- roughly summarized -- in four tool categories: Image, movement, sounds, dialogue. It's the only way to get information across: The words in the script should describe what is to be seen and heard, and from these elements the story unfolds for the audience. A description like "Figure X is angry" is of no use, instead it has to be shown somehow (of course as interesting as possible). Nor is a reference to something that cannot be seen, as in a description such as "Figure Y is 20 years old, but looks like 50".
Quite simple advice, one could think, but often the simplest things are the hardest. Once you really understand them, much of what comes after that is a piece of cake...