Well I've decided that I'm tired of seeing the plain old linear look of vbadvanced and vbindex. You should definately try and be original and do something different with the stucture as there are thousands of sites out there with exactly the same content structure as yourself
Design-wise I can only see you've changed a few of the buttons and the header but you've done it well. The lightening of the vB default gradients for category backgrounds and table headers works well. All I can say is try and change your content structure throughout the site. There are thousands of vB's out there. What makes yours different apart from the header and a few image changes here and there

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Anyways I wish you the best of luck with your site!