Personally I kind of like the PP on the first one. However, I'm at a loss as to why you framed these the way you did. Aside from the centering of the subject (first compositional error), you cut her off halfway down the body in the first, yet left half a frame of empty space above her head? You could have easily fit her entire body in that picture and not had the dead space above that looks "off".
On the second, you cut her off at the waist and again have dead space above to where you could have had more of the girl in the frame instead of the dead space. Obviously the last one is messed up because of her being a foot amputee. She couldn't have kicked the sandles off for the photo?
Most of these also have really bright hot spots/blown out sections. Like her cheeks and arms in the 3rd photo and her entire right side in the last photo.
I do like some of what you did with your PP though, just need to get the base photo a little better and you'll be set I think.