need i say anymore: Details: Take a photograph where this basic shape is clearly shown as a key element. im not dnmc you but the pic dosnt do anything for me either, the noise and the b/w conversion are unappealing and the crop is strange, seems a shoe horned snap shot to me rather than a considered shot for the challenge.
Nice job thinking outside of the box. Of course, the description does say you are supposed to have the circle shape as the main element. Not sure that the kids' heads count.