Try selecting the area outside the figure, expanding the selection by a pixel or two, and clearing. That should get rid of the white line around the figure. Feathering the selection by one pixel should help too. Otherwise it's a good image.

Edit: Looks better now, but the hand holding the globe still needs help.

I really like this image. I have to agree with the other comment, the hand is still funny. It is very blurred and the rest of her is very crisp. I would work on giving her some blur first and then work on blending the hand with the globe. Good luck

Very nice, but personally, I think I'd blur/feather (or whatever) the hell out of the edges of the globe so it looked more like she's holding a mass of energy she created instead of some kind of glass globe any of us could carry.

Congrats for second!