Well first off, You have to make good art. If some artist likes your work, or even posts a comment on it, and they're well known, You're bound to get at least one more person viewing you, maybe 20, maybe 100. Who knows? You really just need to make good art, or in this case, crafts.
Another thing is a sense of how much what piece should be. Depending on how good pictures/crafts you make, How big or small they are, What materials you use, etc etc, You should price it accordingly. I'd suggest asking up any person you know thats commissions things for a good price range.