One of my first lessons with the club pro years ago I learned that if the serve is going into the net then toss the ball more right above you, and if they are going long then toss out in front more. This tip really helps.
Plus this guy just kept reminding me to loosen up the grip, as I was serving he would keep repeating keep that grip lose keep that grip lose. Both of these tips and slow down at the beginning and excel most RHS right at contact really help.
Pacific BX2 X Force pro. wilson sensation 17 G. 60 lbs.