So here's the finished product. I'm happy with it overall, the only thing that bothers me are the arms. I couldn't figure out any way to add armor, but hopefully people will like it. My favorite parts are the spine and the staff. Please comment; I could use all the critique you might have.
I agree with everyone below: This is amazingly awesome. If you want me to critique it, though, I can see one area for improvement. On the pic of his left side, it's basically a right angle between his back and his spine/tail. It would be better if you fleshed that out a bit more, in my opinion :)