Overall, you've done a man's job, here. It looks like you're even actually trying for authenticity. I'm only pointing it out because you are REALLY close. However, there is a little more vertical play on the wings than a "proper flight flap" would have.
Believe me, the last thing I'd want is to discourage you, but for an ornothoid (which is essentially birdlike in behavior) a "proper flight motion" to the wings is down and forward and then up and back, basically producing a sort of "figure of 8" if you will. Anyway, in case you were interested, such are the mechanics of biological flight (to the best of my knowledge anyway) and as I stated before, You are REALLY close.
Anyways, I'm just hoping to offer something constructive, but you truly have something starting here, and Dragons... what can I say, I love them!
Good work... and looking for more out of you.