OK, I'm going to have to come back to this one after the challenge and find out what it is. :) Really a very visually interesting subject, well-lit with nice focus. I think I personally might have liked it even better if you'd cropped it below the blue corners. 7
This is interesting and it's very nicely done in DOF and light/luminance. It lacks a defining shape, however, as if it were more of a "pattern" picture. I feel a need for the shape itself to be more dominant in this particular challenge.