Step one is to make something that you know isn't very good. Step two is to turn that bad thing into an imperfect thing. Step three is to make that thing a little less imperfect. And step four is to make that imperfect thing pretty good.
That is the fastest and most sustainable way to make things. Make junk and refine it over the course of several passes. All of the sudden, you’ll have something that’s really quite good.