Hi Robert,
The Dave Pelz Short Game Bible has helped me with these finesse wedge shots. The most important factor with wedges is to ensure you are accelerating through impact, try taking a 7:30 - 9.00 or 10:30 backswing with different
clubs for varied distances but always finish with a high follow through.
As Takinitdeep suggests use dead hands. Ball centered mid-way between the ankles and left foot flared out 30 deg. Make a full wrist cock and no body coil, allow your torso and legs to turn fully through the shot ending with a balanced finish, up on right toe and chest towards target..
He suggests thinking "Suwissssssh" going back and "Swish" coming down for tempo, but I guess what ever you prefer is fine.