I love your shading style, it really pops out and can make your drawings look real, or even digital. Also the texture is very nice. Your anatomy is practically perfect, including all the muscles and positioning. Over all, this is an extremely well done drawing! If there were some things to fix, it would be the foot on the left, only because it looks shorter than the other foot. Also, the face is nicely done and shaded, but if you are aiming for more realism you may want to make the eye more circle and less cartoonish, the jaw too.
The dragon is not too bad, because you can see that the artist has the imagination and wanted to show how best to me here a little jerky techique drawing, and the refore give you three stars, not five. I believe that this artist has a chance to evolve, because many had already started, and were moving on the graphics tablet to MOX even more to show.
Rating: three positive (3 +) (I know because I collect what I have already 4 years and I have the dragon over 4500!) I've added to your favorite dragon that because I like your in a similar fashion.