Not bad mechanics, overall. I’d try to be smoother through the leg lift and stride. I would not pause at the top of the lift. Maintain movement without stopping.
Try to spend some time throwing into a net as hard as you can. Your arm speed is a bit slow. Throwing strikes with velocity begins with velocity and not with strikes.
Good pitching and mechanics for an 11 year old for the most part. Only thing you have to fix in my opinion is the arm action when your arm comes from behind your head. Your’e releasing it too early, extend your arm out farther. Other than that you’re good Jack!
Thanks Coach! I appreciate the look! jack