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I love the use of color here Joe. Your layout is a consistent grid throughout your design and its easy to understand, from the user, where I am at at all times. Your attention to detail on the bump icon is great.
I really like how you let the color of the works standout and center the users attention on the navigation and the works.
Only trouble spot I see is the twitter Icon. In one it's colored, in another it's white. Is this to show a rollover effect?
Also I think you could lose the illustration (etc) designator on the thumbnails within the section (second image). It is apparent in my opinion that what I, the user, am seeing are your illustrations since I have navigated here.
One last piece is that I would like to see how you handle the title/category display on the thumbnail. A roll-over effect of fading that bar on would be nice to see and allow the imagery to stand out even more from the design when static.

Thanks for your feedback,
The twitter icon is two versions, not a rollover, I was just testing different versions.
Yeah, I think you maybe right with the designators within each section. Less distraction on the image if i removed them. will try it.
I hadn't thought of a rollover effect on the images, if it faded away that would be a nice dynamic visual addition. Thanks will look into that and most probably use it! cheers