Welcome to TPF! Some nice work there, and a few thoughts for possible improvement:
1. There seems to be a slight green cast (from neaby foliage?) on her skin. I think just a touch of fill light would have helped, and I would avoid cropping bits of limbs such as the top of her right hand. If you must crop limbs, do it boldly and not on/at/near joints.
2. This would have been a great shot had you moved her a bit so that the tree didn't appear to be growing out of her head, and again, a little fill light would have been good. A reflector low & right would have been ideal as it would have helped reduce the dynamic range just enough to avoid the over-bright highlights on her right arm/hand/shoulder.
3. I like the idea of this one; I think a bit of a crop to remove some of the left hand side of the image would make it even better, and again, she's placed so that a tree is 'growing' out of her head.