You are going to start writing your story for your comic book. Below are the things you need to have done before you start drawing the actual comic.
Brainstorm an idea for Your story. It could be completely original or you could steal an idea, but just make it your own somehow. ie. Star Wars, but the characters are baloons and their lightsabres are tacks.
Create a pointform list of some sort, detailing the events of the story in the order it will appear in their comic.
Each event should have either a small quick drawing or written note for how they will show it in their completed comic.
There should be enough events to fill a minimum of four pages of comic not including the cover.