I am sorry but the image is too small you might want to check out the tutorial here about sizing your images for challenges. It is found here:
//www.dpchallenge.com/tutorial.php?TUTORIAL_ID=26
If it was bigger I could give a better critique on it.
Please don't be offended by this comment. I am making an effort to comment on all images that I scored below a 5. Although your image meets the challenge requirements, I believe attention to the following might have served to make it work better for me (Mind you, this is only MY opinion):
Image is much smaller than the allowable size. It's very grainy, and doesn't really make sense to me. It is interesting how you were able to capture the reflection in the bubble though. I do like the idea of B/W.