The reason it’s the easiest shot in golf, it’s the only one you don’t hit the ball. Typical “rules of thumb”, on fairway bunkers, all ball, no sand, green side bunkers, all sand, no ball.
My choice is my 52 degree wedge opened up using the same swing I would with a 56 degree wedge.
I concentrate on a spot behind the ball, not the ball, taking the swing path a little outside causing a slight outside to in swing path cutting across the target line.
How much one chooses to open the face is personal preference, and to have a successful shot, the club face must remain open. This starts with your grip. Open the club to the desired open face and face your top hand with palm up. The lower hand will be the same. This will keep the club face open thru the swing.