Well, this is my entry. It's my first ever colouring on computer, I used The GIMP, it was interesting, I quite enjoyed it actually.
Anyway, it's a bit rough in places, but I don't think it turned out too badly.
Scaling down really killed it, click the thumbnail for the full image.
I might adjust it a bit yet, so don't take it as final. Not 100% happy with the cloud effect...
EDIT: Here's my altered entry. I think this one is final. I'm going for an "unfinished painting" look... Once again, click the thumbnail for the full one.