Edit* Just saw that I forgot her little shoes. Whoops.
the colors are great and the concept of Luna enjoying her self when she is first banished mad me laugh. I hope to see a lot more of her from you as she is a great character that doesn't really get a lot of time but still carries a lot of potential for character creation.
Only thing I would of done differently is made her hair more smooth and natural instead of the kind of blocky jagged lines as well as the white out line over top of her. Also, her front legs look a little off in the first two shots, inconsistent and disproportional. Still looks great of course and over all, I love it. I really had to try to find things wrong with it in order to be of any help at all. ( which I'm sure I wasn't.)
Does anyone not remember that she gets banished "in the moon" and not on it?
She becomes the moon. Spiritually.