The cotrast seems to be a touch off on this. I know that it was probablyfor effect. I think that overall if the foot was lit a little bit more you probably could have had the extra contrast on the rope and pulled it off. As it is the foot is a bit dark and the rope's highlights are a bit overblown.
The idea is great! It is a very artistic shot, I wished you had chosen maybe a stronger foot, in my opinion would have enhanced the power of your message. Wonderful composition.