There are two ways to practice the short game. First are how-to shots, where you learn how to control trajectory through set up and swing shape. Second are situational shots, where you move around the short game area and practice specific shots.
Set your body with the slope and have your swing bottom out at or just in front of the ball
Working on a computer or gripping a steering wheel can cause your wrist extensors and flexors to stiffen up and limit their extension in your golf swing