Not a bad concept, but I would have liked to have seen it if you used the maximum 640 pixels that DPC allows entrants. Also, I find the upside down car in the upper left of your photo a bit...weird and distracting.
I'm sure you've already gotten plenty of comments mentioning the size... Besides that, it needs a little "umph" to bring out the details a bit. The stuff in the background is distracting. This might have been interesting as a larger shot, zoomed in to eliminate the background, and with the leaves in better detail.