NO! not the dragon, I don't care what happens to the human, but dragons r awesome and you shouldn't kill em. Well set aside that he's killing the dragon, awesome pic. I would never in a million years be able to draw like that, even with five more years of childhood to spend D:
I think I never saw someone doing a dragon's wing with this texture, it got so soft and stronger than relugar dragon wings. With the iron spiked scales that must be heavy it made a great combination, showing how an armored dragon would be.
If the man's torso was almost directly turned to the dragon's spikes, it would be emphasizing the idea that this is an dangerous defense, how it would seem that he's going to be directly hit by these sharp scales. But his position and what may happen depends on the objective of the picture