I have to jump in here and say that most people you will be trying to sell your art to are not likely to be artists themselves - they may have an educational background in art. However, they're the people who have to want to buy your work. However, Tigershark, here you probably should wait to be contacted by people who want your critiques - many people who post here aren't even interested in being professionals and therefore probably also aren't interested in a serious critique, may even find it offensive. There's a few forums over at cgtalk.com that are set up specifically for people interested in having professional critiques of their work. There's nothing like that here, although it might be a good idea.