Decio, good exposure, and good use of flash. I like the regal swimming pose with good eye contact. The swan does stand out against the darker ater BG. Comp wise, this is very tight, and I would leave some room at the back, top, and extra room on the right. Always try and have your subject looking, flying, swimming into space.
Great pose and good sharpness. The bird is fairly tight in the frame (the tail feathers are clipped), and the angle is a little steep. I'd remove the white spots at the top of the frame.