As I was going through it I was finding it very hard to find anything wrong with it. Other than this – you should keep your art on one page, so if you were to remove the art from the background, and keep it simple – say just a gradient-filled gray box with a white surround?
Something like that would keep the focus on the content.
Hope I’m not to late to the party. I have a suggestion that kinda gets to me.
On your projects page I wouldn’t necessarily try to use the entire image for that small thumbnail. Maybe do a cropping of a section of the website or piece that stand out. For instance maybe the logo or something in the design that is striking.
Also look into setting up a contact page with areas for people to fill out. This appears to be more professional.
I am glad to see you broke out of the normal flow of structure websites tend to be leaning toward these days.
One more very small thing I have noticed mate, how about adding a favicon. You see how here on Chris’ site he uses an asteriks type thing which appears in the address bar, on tabs whithin your browser and in bookmarks.
You can do this by adding something like so in your <head>:
<link rel="shortcut icon" href="/favicon.ico">
When you create it in your image editor, make it 16 x 16 px and be sure to save it as type .ico