Yeah, I'd agree it's the best project you've done so far.
Structure wise, it's a lot like my newest design, which I haven't showcased yet. Though mine is more code-friendly.
I assume you don't know HTML5(Or just plain HTML/CSS), because your designs rely heavily on sprites. Which is fine, because it looks professional nontheless. Just the fact that the load time would be heavy.
Other than that, I'd say it's a clean and professional layout. It definitely has that wow feel to it. UX wise, it's very nice. Usually when people do all those pretty things, their designs usually lacks user-friendliness. I think you've managed to find the golden seem here. As someone mentioned, the colors are matched pretty nice. I really like the color complexion, which I see of being one of the hardest things to do properly. Hope you took a decent amount for that design, because it's worth more than 150$.