I really like the idea, but the colors don't entirely work for me. That's not so much your fault as it is the overcast sky. I say great attempt, and go for it when you have some sun to bring out some more of the dramatic qualities of the riverbank.
It's an interesting photo to look at with nice earthy tones, but I'm missing the connection to the challenge. What's broken? Looks like a person standing in the upper-middle left but can't tell what he/she is doing. Sorry for missing the point. :(