this is PRETTY! but since you asked for a Critique then here is something, well for one I dont know if this is part of your style but the eyes could be a bit closer. Like I said.. I dont know if that is your style, but if it is.. then there is nothing to say but PERFECT!
I think there may be a slight over-use of red shades, but apart from that, I really love your peice. I like the style you've used - realistic, but a slight anime touch. The stag in the background is very nice too. Awesome peice.