the idea of the challenge was to use high contrast to improve the impact of a photo - you've used it to destroy whatever photographic quality there was. And you've also committed the DPC sin of not submitting a full size photo - your photo should be 640 pixels wide, not 500 - it makes a huge difference to your score.
Whoa. I guess it's high contrast, but yeesh, that doesn't imply "completely blown out" to the point where you can't see the face any more. This looks like one of my very first pictures I ever took when I was a kid in the 70s.