Hi Michelle, it depends on whether you are writing an add, movie script or just for practice.Writing is hard. First you need some ideas. Some writers have a computer program called an 'omni outliner' which is great for things like this. You can have headings for ideas for shorts, features, places to keep snippets of dialogue you hear in the street, character descriptions, ideas for drawings or any other visual things.. You can also put a date next to any ideas when you think of them to keep track of things as you review them. If you don’t have access to this program, just start a writing journal collecting snippets for ideas. this way you won't start from nothing. Good luck.