excellent supination on the racket drop

arch back, extend chest and get hand below elbow at start of fwd swing

... and remember, left hand and right elbow trace a circle ... encourages a cartwheel shoulder over shoulder swing into ball

key impact thoughts: maintain spine angle - focus on ball - steady head - sync the fwd weight shift precisely at time of impact

Use the chest (pects) to power rotation ... feel pectorals stretch and then pull the arm into impact ... do not use the arm only