Especially taken with the name, there is a very Japanese feel to your style in this. And I mean more than the Asiatic features of the figure - I mean also the rather stylized, geometric shadows, the minimalistic use of outline, and the quality of the texturing on the figure's skin. I would say the figure has less an expression of sleep, than of intense concentration. Perhaps it is the angled eyebrows and the slight dark crease between them, and the somewhat puckered rendering of the lips.

I think you could have done the figure's hair differently: the lines are random and do not fully convey texture so much as slightly sloppy colouring. Hair going in different directions is all well and good, but I reccommend creating a feeling of strands with very specific groupings of lines rather than chaotic, rub-blurred streaks. I give that critique without retracting any enjoyment of the impressionistic, vaguely Japanese-woodprint aesthetic at work here. Good job.

Thanks, I really appreciate the detailed critique!