Some of the details you've put in ehre are really amazing- the floral designs on her kimono are the best of these. There is a nice sense of realism in the work, with the shading and shadowing. You really do need to tighten up the clarity and focus of the background somewhat, making things a little more defined and present, and the foreground elements need a bit of a touch-up as well. Also, make sure the skin-tones are a little more standard in appearance for someone of the subject's linage; some of the highlights and shadows on her skin don't seem quite right.