I like this image, which fits the challenge reasonably well. The winning shots were much more obviously "crowd" shots, which may have been an influence on voting.
DoF picks out the subject well, and I particularly like the foreground blurring visible on the left - it really defines the focal point.
Subject lighting (as other commenters have evidenced) is difficult to judge: it is not traditional, and the face has the appearance of being dodged in (even if not). It has a yellow cast, which on the one hand helps delineate your subject from the rest of the shot, but on the other is unnatural.
This one made me smile. It is nicely on topic, I like the mood and the lighting, and I admire your courage...... if looks could kill, you would have been in some pain.