Pretty clever! Nicely photographed as well. And one of my favorite finishing positions. I have more 11ths and 13ths than any other positions. I don't know what that means...
The eight cards around the clock have no rhyme or reason as far as I can tell. Counted all the cards in the picture, and those are the eight that didn't fit around the clock or on the face, but I don't see the connection other than being the eight leftovers.
This is so phreakin' phantastic I can't spell properly. What an idea - just terrific. Most excellent composition. Well done - definitely a top five image and a strong contender for Best of Challenge.