Wow, love it O_O
Awsome, especially awsome if it's your original figment of imagination and not a look-alike of some other dragon some other person drew. Though I agree with paspar about the anatomy thing. What I'm about to say applies only if you wanted to draw a regular good-old dragon .
The feet need some work, if you ask me. Especially the front ones. They're way too little.
I'd say the front arms are also too short.
The torso is too slender to fit it's mascular long legs and big head,(incredible job with the head btw, that's probably the best dragon head I've seen in months.)
Sorry for speaking like a know-it-all, just didn't have time to say it in a nicer way. I think you're a great artist, and you'd be excellent if you just worked on a few issues. Way better than I'll ever be anyways. Soo.. congrats and keep up the good work!