One of those things that can drive you totally nuts when you're tired and you're trying to figure out why you can't get in or out of it. Good choice for science.
I just have two notes. One, every little thing within a photograph gives some sort of clue as to what is going on within the image. In this case you have different color tones/ lighting situations converging onto your objects within this photograph. I am slightly confused as to what your lighting strategy is supposed to convey within this photograph. Some questions you might want to ask yourself are does the lighting distract, confuse, or add to what I am trying to convey within this image. Secondly, as far as meeting the challenge requirements I think that this entry is bit weak. I think the idea could have been pushed further and the composition could have been thought out a bit more carefully. I hope you understand that my comments are ment with the best of intentions, and at the end of the day it's all about learning.
P.S. If you feel that these comments have helped in some way and you want to ask any more questions you can email me here www.como@whatisthis.com