There are quite a few things that you can do to get exposure for your website.
here are a few things you can try:
1. submit your site to serach engines. http:www.googleurl.com allows you to submit to google.
2. Submit your site to directories.
You will often need to 'trade' a link to their directory in order to get a placement so be picky.
3.Posting on forums like these commenting on other work and letting other know about you and your site will encourage them to click through.
4. get yourself a blod and write articles on art and art based topics. These get picked up by the search egines and they trace any links back to your website.
good luck. It can seem like hard work sometimes but keep plodding away and you will see the results!