An idea comes up

I got an idea just a moment ago, I would like to shoot some short scenes to describe the actor's dream by using prolepsis in film. The story is that a person wants to be a professional swimmer, basketball player, director, cook, etc. But he only keeps on thinking and imaging how he is playing basketball, doing the director, etc., I would like to use prolepsis to display that. And finally I would like to use these scenes to tell others, if you got an idea, do it.