I have read stuff that have been professionally edited and still wasn't very good. (I got the sense the editor just kept editing and didn't tell the writer the truth because he/she was paid to edit, not matter what.) That was because the original writing wasn't up to par yet. I'm not saying this to discourage you--your writing might be fantastic--just that, IMHO, the best way to become a good writer and judge of good writing, including your own, is to read tons and tons of books, write all the time, critique other people's works and take writing classes.
Just my two cents, take with a grain of salt