Critique my website?

I've been working for a while now on an e-commerce website for my art and framing business. I just went live with it, but I know there's always room for improvement... I'm no web designer, so I'm sure I've missed a thing or three.

Anyhow, I'd appreciate it if folks would check it out here and let me know what you think. Oh, and if you see something you'd like to buy, use coupon code BETA to get 25% off everything in the store (including clearance items!).

Thanks!