you want to get your back knee below the flight path and maintain core balance on the hit

if you leave the ground and leap you still must maintain core balance

when you have a two handed backhand–as you advance you would like to develop a one handed shot also — if nothing else for increased range

you want the hit point in front of your body

on the forehand volley break out to the right at a right angle with the racquet head slightly above the wrist