WHAT!?!? I guessed this would be in the top 20 for sure. I love it!!! It may not have scored as high because the lines aren't "leading" us to the subject, but I think it's a beautiful shot. Nicely done.
I'm not sure if this is intentional composition,or just a snap that seemed fit the challenge. I think it may have worked better if you cropped it out to mostly the center section and placed the boy in the frame according the to the rule of thirds.