I think somehow the use of space isn't successful becasue the subject is so centered. I'm not sure how to rate this image. It just feels a little flat for me. The relationship between the rock and the child is kind of unnerving.

This is a striking image that I like a lot, especially for it's composition. On my monitor, there are some strange highlights, especially around the little girl, that look like less than successful image masking, but perhaps I'm wrong.