Thanks for the submission! Her face is a bit too chiseled. She needs to be cute and pretty, but at the same time strong. Also, this character doesn't really have much "pixie" going on. She doesn't have to have wings, but many designers that didn't use wings have still found a way to make the pixie come through, even if it is subtle. May also be helpful to show some definition in the arms and body. This character you've created is not a waif, and that is good. But she is also defined. Not sure how to accomplish that look with this image, but it would probably be subtle markings on her arms and midsection. Also, I would like to see more of her...her whole body, socks and all, if possible.
Thanks!