The hand is the center of this shot, but I am drawn to the child to see why they would have their head down. It is an emotional shot but I keep being drawn away to the child. I believe you are going for the don't talk to me (mom, dad) feel. For this particular challenge I may have had the child sitting up in the center of the shot with head hung low, one hand covering face the other up as you have it but almost covering the face-in-hand behind. Keep the veiwer in the center by making them try to look beyond the hand to see what is wrong. A little windy but thats my thoughts.