As a person that enjoys writing and other means of self expression in art, I find that the words that come to me don't always adequately convey my message. I have a decent vocabulary, I think, but getting the essence or deeper meaning is at times a rough job.
In writing, I want to create a world that no one has seen or experienced. Artistry, of any kind, brings us new realms, worlds, people and the list goes on. But even the greatest writers can look back on one or another of their works and say, "It wasn't exactly what I wanted, but it's what the audience is going to get."
So many times, the art is what readers or viewers want! The longer an artist is working, the better their world's will become. So, give me some time!