Simple...
a rough draft is what it sounds like...it's your ideas that you think of..and you make something out of it; a presentation, paper, essay, etc. Your rough draft is for you to write, create, re-think, to make your final presentation stupendous to the best of your abilities. If you don't know how to create a rough draft..here's how. First, jot down your ideas..what you want to do/not want to do etc. Make your ideas into a whole..create what you see..and make your project.
Thus, your answer.