If you create an image and it takes you 5 minutes or 5 days, then post. If you are the best artist or not, and you want to post, then post. If you are happy to show others your images, post. If you want criticism then ask for it. I have seen too many potential great artist scared away by criticism (artists are often very fragile). MOST OF ALL ... I have seen many people become great artists as they grow and florish by the "Excellents" that they get in these galleries. Lets not scare anyone away.