Superbird
Fire emblem is great
The neck looks a tiny bit awkward IMO.
Not bad. This idea seems to be used somewhat commonly...Anyway, the green, blue, yellow, and red next to each other with no buffer on the head need some fixing. Also, on the wings, maybe try to make the progressive colors try to blend to each other a bit more?
White is Lugia's real color, not blue; Try that, maybe it will look a bit better? Also, the talons look somewhat awkward.