I see you like to use the stroke path tool. I do too. But the annoying thing is that the ends are blunt and not sharp. You just can't see the sharpness of the hairtips for example. You should realy take your time and sharpen those ends. Either erase or draw them sharp manualy.
Another thing, even though it's a chibi-character try to make the hands more realistic. I know hands can very difficult to draw but have to keep practicing. You can see that on her left hand you got a bit lazy (sounds harsh, I'm sorry) and just draw 5 short sausages (sounds very harsh, please don't take it personal).
Besides that the picture looks very good. Pose, facial expression, colors and lighting are great!