I really liked this game. The difficult controls added to it for me, kind of like flappy bird haha. All in all I would say the concept, execution, etc. behind this game are super good. I loved getting to max size and then suffocating before I could get to the steward over and over lol. That made it almost more addicting, like I almost got it...!! I gotta try again!
If I had to nitpick to think of some feedback, the only things I can think of are that the out-of-air SFX could be a little harsh on the ears (though I didn't personally mind) and the steward's downwards fire pattern could be a little shorter, I think (not sure if this would make it too easy, though - just felt a bit like it was almost unavoidable 80% of the time, no matter how much air you had saved up to dive farther).
Also I love the look of the dragons in this!