There's something terribly wrong with the proportions here.

The left leg is taller than the right?

Her eyes are also too close, it makes her look cross eyed. The space between the two eyes should be the length of another eye. Obviously overshot it.

The size of her head and the height of her chest seem off, too.

Compare the angle of her shoulders to where her boobs are. Compositing is okay but damn, take a little more time to line things up.

SpookyToof said:
Compare the angle of her shoulders to where her boobs are. Compositing is okay but damn, take a little more time to line things up.

Dammit, can't unsee. I could write the rest off as perspective/style too. . .