The detail on this image is amazing and I love the varying colours. The twisting tail is done very well, as is the pose in general, and I really like the way you drew the folds of the wing skin. I find the eye so near to the mouth slightly disturbing, but it's not something I can say is inaccurate. I like it when an artist gives a dragon some bit of originality like that. The shading on the belly scales could be a little smoother, but otherwise very nice work.