Well.. not to be too nit picky, but I think the shadow is distracting. It's kind of merges into the person, so you can't see a good defining line where the person ends and the shadow begins.
As far as the pose.. it would help to see more of the person as well. Right now, it looks like the arms are chopped off at their elbow because all you see are tee shirt sleeves. Similarly with the legs. I'd play around with different poses if you were going to reshoot.. try to keep the same feeling you were going for, but let us see more of your subject. The emotion should be in their expression (if we can see the face) or body language... I get the feeling in this that the only real emotion is coming from the moving water... if that makes sense.