Don't misunderstand me, that is some excellant texturing work there... for a snake or lizard.

It's not because it's green. In fact, I actually like the green color you have going on there, it's the slimy look that kind of ruins it for me. Unless he just climbed out of a lake, I think you should adjust that.

Just my opinion though, if this is the look you wanted then you did a fantastic job.