Wow, It's awesome how badass you made the dragon look by just using black and white, haha. This is insanely cool! You did an excellent job with the line work, especially since you had to make a lot of pointy and jagged lines. You managed to make all of those pointy and jagged lines look clean, which is impressive. I've seen a lot of users that can't make spikes look very good because they can't make those kind of lines to a fine point.
Also, I can't imagine how much time it took you to do all of that shading. It certainly paid off, though!