I would like to get some constructive criticism if got some time.
I made one image larger ( capturing the shoulders ) than the other, just to make each shoe unique with out taking away from the symmetry.
The artwork and detail itself is awesome but honestly, I wouldn't wear those on my feet (maybe its the placement). Those would be more showpiece-display-on-the-shelf joints moreso than neckbreaking kicks.
Anyways, you have bars, so kudos to your artistic skills!