I like this. Bit weird, but likeable for it. A teeny bit more attention to detail, if you'll be submitting shots like this for examination. Obviously your model has a ton of makeup on, but I can see flesh peeping through on the ears. On a personal note I'm not 100% convinced I like the lighting on the top of the head; the hair. Can't put my finger on it though.
For a previous upload I superimposed a sky, onto a globe. Try the spherize filter, I think I ended up doing it a couple of times to achieve the effect I was after. That might help you achieve the reflections/ catchlights you're after.