I absolutely lov the shading in this work, I do not really like anime pics. but this more realistic style gives me the exrta touch I'm looking for.
Very very nice.
Maybe one tip I can give you, always mix black paint with a bit of colour, otherwise It totally flattens the shaded parts. This didn't really happen in your pic but I can see in the background you used only black there.
Not too fond of the run-of-the-mill Japanese style either, since non-Japanese often try to reproduce it to ill effect. I jump back into it once in a while, but those are rather rare occasions.
I used some really dark blues, expecting some ambient lighting from the surrounding displays to slightly illuminate those shadows; if you have an LCD monitor (which I use), it would be really obvious, but I know that things are much, much more different when shown on a CRT. I hate that *groan*