Nice, cool, well done, unique in its category... i could continue but i don't have enough time and battery on laptop to do it XD

The clouds, the sky and the sun are very nice; the expression on both dragons, shadows and the light through the wings are really worked (i think your hand and eyes are very tired of all time you've spend in front of screen XD)

Do whatever your heart dicts you is the best and take this critique as an advice. In my opinion, if flay's tail shines, its light should cross the cloud and let us see it well.

Anyway, it's really nice, still in this way, or improve it ^^