She's placed quite much in the very middle of the frame. I immediately wish she were more to the left, with more room within the frame in front of her to walk into. And I feel this photo has too much headroom (which, coming to think of it, offers you easy chance for some cropping, without losing the custom print size). Other than that I like her stride, the thoughtful expression, the highlight on her hair, ... and I wonder if not the histogramme would say you could still up the highlights some more. I feel it is a tad dark.