I'm going through the entries, stopping at those images I feel have had the benefit of an unconventional eye and dwelling a little longer to try to see and appreciate what you saw. This is one of those images.
Positives: What a stunning composition; I love the zig-zag my eye does as it makes its way up the steps. The light too, the way it edges your model/main figure and the others on the steps. I also get the most subtle impression that the girl is not fully desaturated - is that my imagination?
Critical stuff: I can't see a way around it but the top right corner is a little dull - I wonder if a brighter or darker tone might work better.