if you use the continental or backhand grip on your serve you must pronate out to get some racquet head surface on the hit
Stan and others gather the toss under he racquet
to get the rotation on the shot you must open the front hip by getting the front foot toward the net
one of the serve starts is to go up
on the serve get your elbow up–the bottom label up to the sky-eyes up
you want to rotate hand , hip and shoulder on the hit
on the serve if you can keep the racquet head down on the top of the motion– you have to come out of it–this will…
on the hit get either foot forward
ideally when you lob you would like it to go to the backhand side
keep your eyes where the ball was for a beat
track the incoming shot all the way into the center of your racquet
keep your tossing arm up and sight the toss through the tossing hand
on the short incoming ball step up and hit a full power shot
when you add your knee bend get your heals off the ground
if you bring your foot in– bring your back foot into the front foot