Interesting angle. The shadow from the sandal on the left is nice as it extends the subject. Focus seems a little fort. Wonder why you cropped the way you did and why you didn't crop out the gray blotch at the left?
I'd have to say this is a real stretch to fit the challenge. And while I hate to say this, the photo just isn't that intersting, I'm sorry, keep trying.
I think this one is a little too out-of-the-box for me. I dont get the "boredom" feeling from this and, besides, I believe it lacks creativity. Better luck next time.