I like the high key look here, but the lack of catchlights in her dark eyes (except for the pin-light flash) really hurts the image. Try putting her nearer to a window and watch for light in the eyes before you shoot. I like that you got down on her level for this shot. You captured a great little girl expression. You have a lovely little model.
A wonderful high key portrait except for the eyes. They need more of a catchlight in them. Try firing your flash manually at low power or placing a bright light behind you to reflect in her eyes.