Beautiful image ... perfect pose to light up the underside with that gorgeous light!
Would trade more room on the left for less on the right if you have it ... and maybe a bit more room at the top.
Seeing a green cast here ... try adding some magenta and see what you think.
Terrific wing spread, nice light, well exposed and detailed. I could go for more room above and left, and I'm wondering what the small area of darker blue touching the neck is.