Oh wow. I LOVE your colour work. The one thing I do prefer about Kaz's to yours though, is that though your colours are excellent, in parts they feel over saturated and almost murky. Also, places on the focal look really JPEGish- you could try either VERY light bluring to fix that up, or if you know of them you could try using topaz filters on different opacity settings.
Your depth is wonderful, and in fact I find that depth is something that's really a hit or miss when it comes to this style. You did a very nice job on that.
Last thing- work on lighting. I know it sounds like I say that a lot. I'm by far not a master of lighting myself but it's one of the first things I look for. It looks like you've defined the light source in the right spot, just have it effect the focal and the focal's surrounding area some more.
And because Kaz did it... D: