I think it's cool, but an extra color will make it better, try to put something like orange in it, smudge it and put it on a different blending mode, i'll think it will work out very nice
I dunno man, while I do like greyscale, I think there's a bit too much white to the left, still awesome though ^_^ EDIT: ZOMG! Hell posted :blink:
meh, I feel like you could have added a bit more without making it too crazy. and yea.....greyscale is umm..alright, but maybe add a tiny amount of color on some parts, and desaturate like 70% of it. 7/10