She turned her head to look at something or other and I got the beak in profile. For whatever reason I see a big of vignetting on some of my jpgs, but not in the TIFF files (which I don't expect at all, using a crop factor body). Maybe there's just enough to show up on a JPG, given the lower image quality? Can't say for myself. Anyway, here's Luna yet again.
7d mkII, Sigma 150-600, 1/2000 @ f/6.3 (widest aperture for that length), ISO 800
I like the one good eye, and the beak in profile. I would have preferred her to the left, with space to look into. Also note the white right-hand edge.
Bills comment on composition is right and would improve the image a lot,don't think it would be a big job to add some more canvas if you were so inclined,I personally would think the image is worth the effort.Would love to photograph one of these.