Well it's... Blue, looks like you have covered most things... I like how smoother the buttons feel against the extreme blue you have.
There are some small skin features I would change but it's still a good go at it!
I would post my first skin but it seems that the skin search is not working.
EDIT/ Only fancy thing about my first was that I had a perfectly "animated" volume and EQ sliders which would fade from a bright fire truck red to black.
Welcome to skin creation...Great first attempt. I like that you paid attention to details, though...I prefer more overall deviation from flat base colours. I think you have covered everything you can. Perhaps, you could extend your work now to some basic gradients for the overall window areas? Give it a try (couldn't hurt now that you have learned quite a bit about skinning...)
Hooray! My skin got reviewed and published on my first try. http://www.winamp.com/skin/details/222600 I am curious as to why I only got a 4.0 on the completeness scale though. I thought I hit everything. Still glad it went through though.