I like this shot, its an eye catcher. I like the texture of the wall and the elements of the person and bike against it. This is being really picky, but the angle of camera to subject could be just a bit more perpendicular. I struggle with this myself especially with quick shots.
Just a lot of interest in this. Has me staring, looking for the symbolism that may or may not be there. I like the low placement of the subject(s) in the foreground. Very nice all around.