Feel trail arm extension
Width also comes through extension in your trail arm. To feel this extension, stick a tee peg in the butt of your driver, grip the club in your trail hand only and swing to the top. Try to get the peg as far from the ball as possible; you can also try to create a 90º angle in the arm. These thoughts will get the peg pointing away from the target, helping you find a longer arc and a more powerful swing.