On camera flash doesn't help this image.
Try to ues a more imaginitive lighting setup. Either try to get your flash off your camera, or use window lighting or a reflector to make things more interesting and softer.
I can see you have gone to some effort to create a nice photo here and respect your effort to setup a plain background. I think Black is not a good colour as it creates a vacume that draws attention more than it should. Better is a plain colour or grey.
Crop is good and I like that you have gotr down to eye level with your pet to take the photo.
I had the same "problem" with my own dog, that the white part of the eye is showing to much. I solved the problem by click with a small metal-object on top of the lens hood to get his attention in that direction instead of his owner. She looks like a beautifull dog though!
I would have burned the bright spots in Daisy's eyes... or adjusted the lighting. Lovely composition and dog. Nice and sharp. 6 from me, but would have been a 7 with the eyes worked on a bit.
EDIT: Just remembered this is Basic editing. Guess it would have had to been the lighting adjustment. Bumping to a 7.