I like this photo. I like the darkened reds and the contrasty lines, but I can perceive the halos around the areas where dark meets light. Barring that, this is a nice, nostalgia-looking sports shoe photo. I think with a bit more time and tedium the Photoshop work could be perfect.
Since the dirt on the trainers doesn't seem like it's suppossed to be saying anything, I suggest it should have been cleaned up. The hot spots on the top shoe could be fixed by less direct lighting. I do like the composition, and idea evoked by the title.
Good contrast, but in a challenge with nearly 500 entries you've got to stand out from the croud. Creativity and artistic components become even more important than the technical aspects. Technically fine, but lacking any real creative intrest. Sorry.