Color Saturation and Hue: N/A image is monochrome.
Brightness and contrast: The white highlights are very bright and compete for attention. But the blacks aren't quite all the way black. I would have liked to have seen a real inky velvety black in the darkest areas, and perhaps a few more of them. They would help this image really pop.
Focus and depth of field: Both are very well executed.
A little more black and deeper blacks, as mentioned above, would make this image stand out. As it is, there is a lot of gray here. Which, is not bad. But gray doesn't grab the attention as well.
Other than this relatively minor point, a very well executed image, and a well deserved finish in the top 30.
I can kind of see it is a reflection image...one that draws definite attention. The composition could have had a little more dramatic angle I feel. The white is almost balanced in the image which sort of take attention away from the center. I would still rate it pretty high because it does justice with the theme.. albeit it will be controversially abstract for some. Good job, could be better.