There are many challenges for the would-be author, poet, musician or playwright.
1. Where do the ideas come from?
The best answer I’ve seen for this is from the writer Neil Gaiman. “I make them up, in my head.”
2. How do you know if it is good enough?
I don’t know who said it but I agree with the line: “There is no good writing, only good rewriting.”
3. How do you get people to notice you?