After you make the head(flat image) make a spinny head,upload the spinny head picture on the market with the prices. The only site that i remember right now to upload pictures is www.tinypic.com. When someone buys the head upload the flat image, then send him the link
EDIT:to make a spinny head on gimp is something like this Filters>Animation>Spinning Globe
Last edited by ShadowXD; Jul 17, 2009 at 03:55 AM.