Honestly, it looks cheap. Like something you whipped up in 15 minutes. If you're representing yourself as a design firm, your website better look damn good. It needs to make the potential customer think, "damn, I want my site to look like that!" Yours doesn't invoke that feeling for me.
Um, that design did not take 15 minutes, and it doesn't look like it either.
Honestly, nothing personal towards you, but clients and people who make these comments about graphic designs really end up angering people like IC3D and myself off. Unless you are in the business (if you are, alright), you really have no concept of the length of time it takes to create graphics. Making a comment such as this, usually shows lack of experience in the field. Add the 3D work, with the multiple layers, then making sure the navigation bar is properly spaced, then the highlight and shadowing work, and you have hours of time invested.
What you are failing to see is the finished product, which involves the coding aspect of the site. You only see a flat 2D design that you can not feel or "play" with. That being said, I can show you multiple websites that you would probably think "looked" cheap, that really cost $25,000 and up in design fees alone. That doesn't even include the added costs of a custom shopping cart, copy-writing, and professional photographers. I have personally worked on these myself. And a lot of the websites out there are just crappy templates that someone downloaded for $39.95, or even worse, they have coding it themselves without researching what code works for one browser, but messes up in another browser, which really makes a site look cheap.