Great job, Vhea, I especially like the way you colored the snake. The only thing that bothers me is that the lines are over-pixelated, which looks really odd with the professional-looking coloring job. I know it's not your fault, but a little bit of smoothing the lines would really add a lot, methinks.
Also, am I the only one who thinks Suigetsu looks just like Kadaj from Advent Children? :P