I love the display of aerodynamic tech here, with main wings, alular feathers up, tail canted. They are masters of flight.
The look back helps, with good eye contact. Well exposed. Generally flying away poses don't succeed, but this one does for me. Perhaps a bit of lightening under the tail (just a bit)
Colin the strong head turn would make this a keeper for me despite the fact that the bird was well past you. I also like the wing position and the tail angle. Like Randy I'd suggest lightening the underside of the tail a bit.