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: This is very well done indeed - just the right amount of motion, sharpness, contrast and brightness to convey a sense of crystalline ghostliness. Very often image that seek to reduce an image to basics can fail as the process removes rather than reduces, destroys rather than distils. You've avoided that and have managed to conserve and even augment the vital elements of this scene.
Critical stuff: Not much at all.
Overall: A very likeable image, well executed, well understood and well communicated.