I have left this piece in my inbox for days now, just looking at it whenever I log in. The contrast of the drab background and the bright colors of the subject really draw me in. The sweeping brush strokes really give a lot of detail to the hair without having to draw every strand, and I love the idea of the rings being bound into the hair. The coloring of the skin makes me wonder if it was originally tan or blue, though in my mind I feel it is blue, like Shiva from Final Fantasy X.
Overall, I think the simplicity of the detailing really allows the viewer to see this through their own filter, making it whatever they need it to be.
Good job and keep it up!