I like your idea and the composition isn't too bad. Perhaps even keeping it a bit more off centered work help? Also, the lighting seems a bit bright to me, and if it was a bit more in focus all around (I like sharp pictures) I would have scored it better.
Meets the challenge, and does so in an artistic fashion. Enough to bump you ahead of the crowd, but to take top 10 I think you're going to need something captivating that holds the attention of the onlooker and draws interest.
nice color in the beans. nice cup arrangement. complimentary lighting. the clear cup gets lost against the white background, imo. i would be interested in seeing this image with a different colored background to enhance both the cup and the beans.