I think that you have some really nice work. However you are using deviant art to advertise. The issue with that is there isn't anything that would catch my eye. You are using the deviant art template so there isn't anything that really catches my eye.
. When you really want to get serious about selling your product then creating your own website is a nessesity. It shows people that you are a serious artist, and not just another username on a site.
Don't think that I am bashing your site, but I am just trying to give you some advice from a marketing point of view. Also, your site will look nicer.