Nicely done. I wonder if you looked as silly as I did, trying to make a shot like this. (Mine was a pair of shoes, and not for this challenge.) In your image, the sky looks a little odd like perhaps you saturated it a bit? The clouds lack a certain whiteness. Otherwise, good stuff.
Clever - lots of blue and lots of interest. It may be a bit stroger with about 1/2 (or more) of the area above the shoe cropped out. That way the shoe would be close to the top instead of dead center.
Now you've done it. I can't use this concept for the feet challenge. Darn it.
Good imagination. I don't know if I like the negative space at the top, but it's still a good picture. It seems to be a little soft too but I do need glasses.