To launch a good wedge shot it’s important to strike the little white ball (with the dimples) before you hit the big green one (the earth). And since every swing has a bottom to its arc you need to position the white orb just behind it so that your contact goes “white-then-green”—not vice versa.
You’ve got a built-in safety net already because playing the ball slightly back delofts the club as does abbreviating your backswing and follow-through. Check the photo below for what the punch looks like.
In the photo below I’m standing on the beautiful and meandering Shinnecock Hills G.C. site of last month’s U.S. Open. If you’ve never played Shinnecock before believe me when I tell you that for most weekend golfers shooting better than 96 on this course is an achievement!