Understanding Tennis

run around the forehand and hit

if you are bringing the back foot in  bring the feet together

on the return relax the start position

full swing no bounce

bring your backside through together with your hands

use your legs to spring in on the serve

hit the ball in front of your body

after your serve land balanced

on the serve rotate through to the opposite pocket 

hit the run around return

on the overhead use the other hand to guide it in

get back  on the return to handle the power serve

Ben on the serve has a big curl on his start of the serve

get the racquet bin front of your body on the break out

no choice square up the hit point