I like this one:
I assume it's yours? Really dig the style... Only spent a couple of minute on the site - Anything else in that style?
Wish I had a bit more talent - Would love to be able to show off my stuff.
Good luck with your site - It's going to be hard to compete with sites like deviantART. Some of the artists that hang around here have deviantART accounts.
Just a suggestion - Maybe share more about what you're trying to do with your site? I'm sure that people who are artists are probably wary about giving out their works to a stranger - You know, copyrights and all that stuff. Plus, if your site is more like deviantART, then you might want to say what distinguishes yourself. Like, maybe you have better SEO so that someone doing a Google search will come across your site faster.
Just a suggestion - I think that you might have a hard time getting people to submit their work if they're already using a site to post their stuff. Maybe say why your site is a "better" option?
Anyway - Good luck.