Very nice Hung, the wing position and the angle of flight look very good to me.
2 easy changes that would enhance the image would be to love the bird back slightly, Ilike to see more space in front than in back, and some selective USM on the eye pupil.
I also find it dark as posted, especially in the face and lower body. There is a bit of colour noise on the underwing possibly caused by lightening the details there. Great bird and flight pose!