Can I add a critique? I think you need to add a tiny bit of black (or darker darks) here and there to increase the contrast. Just a few bits, like the chin line, maybe the ear? In the hair? I think that'll really make the other colours pop. Beauty job on the eyes! Which illustrates what I mean, I think they stand out so well because of those little highlights. More will increase the cohesion of the rest of the painting.