I can think of a few.

1) The gallery and buy now overlap but not enough. You should be able to buy prints from the actual print page. Consider using the buy style view as your gallery (Much like a product listing page)

2) The homepage is nothing but a directory. The carousel is moving too fast, use it to showcase recent or popular prints (no carousel.)

3) Consider why the user might actually be coming to the page? The entire bottom half (about, recent posts, twitter) can be combined into a sidebar which would be more economical space-wise

There are just a few starters.

Thanks a lot sritch, really appreciate the feedback.

I agree that the gallery and buy now page should be combined, I'm starting to think of the site now as product focused, rather than showcase focused.

I like the idea of ditching the slider/carousel and putting up more actionable and recent products and postings.

I guess the home is now of a portal rather than telling the user anything special or showcasing why they should be here.

Great tips, thanks so much.