The challenge called for a white background, not a white frame. Interesting composition, though I'm not really sure what statement you're trying to make with it.
using an incorrect white balance is really going to hurt in this challenge. If low1 was anything to go by, nothing short of pure white will be what the voters are looking for. I leanrt that the hard way.
well, err, that's quite yellow. try using manual white balance instead, or remove the color cast in post editing. the front element (cigarette?) seems it should be in focus also.