you want to go up and out before you rotate
Medvedev has a great quick to the finish
on the serve follow through bring the hitting hand to the opposite pocket– hug yourself
see the contact — track the ball in
up and out on the finish
before you go over the shoulder you must still go up and out
you need to get the back knee below the incoming flight path
pull the step in leg in and away to create the space needed to hit
when facing a power hitter get back more to give yourself more time handle the power
on the slice drive the follow through out
on the serve start a choice is to drop the racquet to the ground
bounce with purpose spotting the amount in front and the toss left or right
on the two handed backhand rotate to get the over the shoulder finish
I like the tight backhand prep– elbow against the body
both feet turn of the preparation–allows the backside to come through