This one took little time to conceive, but took some time before getting the right conditions and even more patience when the conditions arrived.
To their credit the kids were awesome and spend much longer than they expected (or I advertised) to make this image.
Once we figured out the right set-up and positioning, the rest image quickly fell into place and it required a little crushing of the shadows only, coupled with a boost in skin-tones via Color to Grey (my new favorite process in GIMP) to bring life to the arms and hands.