I read the summary about your site on BB before viewing to see if the online presentation would suggest its purpose. It did on the first page. The downside is the fact that I had to then click again to get to 'real' content. This frustrates some people. Search engines will also trawl down the site now so it doesn't stop them obtaining more detail, if that was your purpose of the splash page?

You should have the art work on the first entry screen. That's what you're about after all. Do I really care about your mission statement? I'm after art not corporate identity.

A back button when viewing an artists work would be good.
I would also suggest looking into providing online sales. Auction sites provide some artists with plentiful income.