this shot would have been better if the date stamp wasnt on the bottom. There is slight camera glare at the bottom as well. Try using a diffuser when doing these types of shots.
The subject matter makes sense for the challenge and is arranged in an interesting enough way. As I'm sure others are also telling you, the lighting is very harsh (I'm guessing from a flash; you could try putting a tissue over it to soften it) and you should either turn off the printed date in your camera or take the shot a little wider and crop it out.