You there, yes you. Illustrators don’t exist in a vaccum, no matter how many hours you sit chained to your drawing table. Get your work on the web and post it for critique on a few choice bulletin boards. The Shrunken Head Man Club has a list of excellent illustrator/comic artist/cartoonist boards for you to be torn to shreads on. Go on. Buck up and take it like man, you’ll be better for it.