I think if you cropped off the right side of this shot to off-center the little girl, it would improve the composition of this shot. I love the vividness of her outfit against the earthtones of her surroundings and that look on her face is priceless. I also like that she's holding the helmet since it fits to the challenge and doesn't make it look like you're just wedging a picture into the theme. The trash on the ground is a little distracting, but maybe that adds to the theme too. Surely this innocent little thing didn't make that mess. ;-)
Cute liitle dool. May be a bit over exposed. The bottles do nothing for you image and could easily be cropped out. If you did that you also take away the "dead centered" look - a good thing.