While You Sleep

So umm... my very first attempt at a pegasus. I don't think it turned out all that bad, although I realize now that I need to move the wings up a bit more on the body (to make it even reasonably anatomically possible), but oh well, I merged them long before I realized this.
Please critique? I keep asking for this, but no one has really dissected my work and told me what I need to improve on.

The wonderful stock providers:
child: link
pegasus: link
wings: link
background: link
sky: link
girl on balloon: link
balloon: link