Too bad on the score, this is a quite original photo for the challenge. I think any time you get conflicting opinions in a challenge (good comp/bad comp) that means you are doing something right. Interest...it has more appeal than most macros you see out there. This is a photo for a different type of audience as far as scoring but the type of photo everyone should look at because there is more depth to it than most.
Technically I find this shot very good (but then I'm no expert so don't get excited). The shot meets the challenge but the subject just isn't very appealing though.