Very interesting study, but not what the challenge required. Also read the tutorials and search the forums to learn how to enter pics with the best file sizes (i.e. the bigger the better... use as much of the 150mb as possible and have your longest side set at 640 pixels). Godd luck in the future. You have a good eye.
Image is really small. Try using full size allowed. There is a tutorial if you have Q's. Also seems to me that this does not meet the challenge very well.
For each challenge, there's a more complete description other than the one or two word title - it helps to read that so you can avoid the "did not meet challenge" votes. Also, see this link: //www.dpchallenge.com/tutorial.php?TUTORIAL_ID=26
This will show you how to resize your photographs to take maximum advantage of the size allowed for challenge submissions.