First of all let me start off by saying that this is a excellent shot and fits the challenge very well. Your placement at 25th was a surprise to me, since I feel that this shot should have finished higher.
Now for my observations that may have helped this excellent shot do better: The lighting on the left side may be a little overpowering, and the focus is a little soft (I believe that this was intentional but may have cost points with the voters) Composition is very good and I cannot see a way that you could have improved in this area.
a very nice way of showing DOF. maybe the orange could have been the closest to the camera. this would have given it much more emotion. with this photo i have to go look for the emotion(which is there), and maybe its a good thing.
Your use of DOF is much more subtle and makes a much more interesting photo. Like this much better than the "hit you upside the head with a hammer" DOF photos. Well done!