on the ball at your body– you need to step in but away from the shot to create the room necessary to swing

you want to square the hit point in front of your body

you need to track the incoming ball all the way in– eyes on the ball– your head very quite

if you are going to bring your back foot in on the serve you must bring your feet together–Dorothy style– click your heals

as you chase your upper body turns to get the racquet in preparation mode