Very interesting photo. I've looked at it for 5 minutes now and I keep seeing new things.
Meeting the challenge - I think you've basically met the challenge. This is surely shadowy. Some voters might have knocked it down a notch because the shadow is not a focal point of the photo. Most of the high scores were for photos that made the shadow the main subject or at least a major element in the photo.
The blues and blacks work very well. Perhaps a bit too much in the black void on the right side; especially when contrasted against the blown out whites in the upper left.
The composition works well as the eye moves across the image area. The only negative is that the end of the drop is not very sharp. The eye follows it up the arc only to get lost in the end.
The photo does a good job of creating texture and mood. This might have scored higher in a different challenge.
I hope this was helpful. Feel free to contact me if you have any questions.
Sorry to have to wonder... but, what is this? Water with hair hehehe... Well it looks good as an abstract, has good colors and some shadows... so ok :o)7
well done. I believe it would be very difficult to get a photo that looks like something should be there but the viewer can't figure out what. you made it interesting enough that I keep looking for something but still all I see is shadows of some unkown thing(s)