I like this.
This is a very interesting drawing. I have only three things that I don't like: Line weight, all the lines are the same thickness and makes the picture look rather flat. Shading: I would love to see more shading. I noticed there is some shading but there could definitely use more. The third thing, Very busy: The dragon, I assume is the star of the pic, but is overwhelmed by the rest of the foreground and background.
However, I find the detail on this amazing! Seriously. The fact it's all in pencil, is impressive. This is better than most color pics I've seen floating around. Keep up the good work.