Nice photo, with great details. This type of shot is very common. It has been done many times and that might be what hurt your score. Even though it is a great picture. I like everything about it. Maybe if you chose a different angle, like shoot the leave from the side with the dew drop dripping off. Sometimes if you just shoot the same subject but in a different way it doesn't seem so common. The damage on the leaf is not a big deal to me. It would have been really neat to have the insect that was eating the leaf still present! Overall, you the picture is nice, just has no "it" factor. Good luck in future challenges.
The bite marks in the leaf detract from the image. This is a nice shot of a leaf, but they're so common that such photographs need to be done exceptionally well to be interesting.