Spectacular!, awesome deign and really well painted, you have some serious skills.
If I was to give any crit at all, It would be that the colour pallet is really cool, which may be the intended style, if so just ignore me, but yeah, you might want to try some warmer shadows, since the lighting is very cool.
The rule of thumb being; warm shadows with cool highlights or Cool shadows with warm highlights. But like I said, very minor nit pick in a piece like this, its absolutely wonderful and you might of been going for a very cool pallet intentionally.
Can't wait to see more of your work!