Hi. I am helping this athlete with his shot and he stands up too soon before the ball and also has a hitch at the top. Any suggestions. Thank you https://youtube.com/shorts/wTKiZSxUYug?si=IVQhmnJQWY_iaC4X https://youtube.com/shorts/XTewI2y2Hxg?si=Wkmj3tkvIWhxQ7al