I have some sketches where I went full out with the parrot...ness (?) and....its just....didn't work for me...like....it didn't look right, and it certainly wasn't dragon-enough for my liking, so I did this..
His face/beak should be rounder though to keep in line with the avian appearance...
Like I said, im not quite happy with the way this looks (which is sad because Nadders are my second favorite because they look like parrots)