I like the image overall, the comp, positioning and the head turn are good.
Negatives for me is a lack of sharpness in the head area, other than the eye. The light is a little harsh. Lastly the BG is a bit of a problem for me also.
Good head position and composition on this relaxed cutie. The background is quite busy, but it can be difficult to find hummingbirds perched with a clean bg.
I would sharpen just the face a bit.