I bet this took you are long time. You did a great job. The dragon looks almost real. It minds me of the book The mirror of merlyn because there is a bad dragon that merlyn can't control. Good job.
Bad Dragon by @thedustyphoenix (Angi Apilado)
I think this is one that pretty much speaks for itself.
Aw... I like it! It looks like it took you a very long time, though, with all the scales drawn in. Personaly, I think it might look good colord, but that's for you to decide.