Aha yeah I know what you mean. We’ve all been there with the impossible unrealistic first idea, probably how most of us started out 
Reality is a ***** .
But to the OP, don’t think I’m mocking you good luck to you and I hope you do make something. Just be advised of the reality of making your idea and bear in mind we read a post like this on a daily basis so the first reaction from us is usually cynicism