Try taking the channels of the color RGB(i assume) and cut and pasting them into LAYERS of a new empty document. then use all the goodies like contrast and brightness, opacity, etc. You can get some interesting results. The red channel alone can be altered to resemble an infrared photograph. The blue channel is almost the same results as using orthochromatic film(blue sensitive). Just keep messing around. Very nice photo by the way. I actually like the black and white better, but they are both very well done.