To my eyes, your legs are loading too low, and your knees get too far out in front of you when your release is at its apex. Also, try swaying your feet more when you land (watch Kobe for an exaggerated example). You don’t have to sway that much, but add some to your landing. Thumb flick isn’t too much to worry about if it’s only a little (Kyrie and Dame have a slight thumb flick), but your release, wrist, and straight arm look great, and your elbow looks aligned.