When swinging the golf club, you want to have a swing thought. One swing thought to improve your swing is left arm position. In the golf swing, there are certain positions your left arm should be in to produce a good shot. Practice these positions, and you will develop a more consistent swing.
Address the ball and keep your left arm straight. Don't tense your left arm up; keep it relaxed and straight.
Swing the club back and feel your left arm stay close to your chest. You should feel your left arm hug up against your chest as you turn your shoulders back.
Keep the left arm straight as you get to the top of your backswing. Many players relax the left arm at the top, which leads to a loss in power. By keeping the left arm straight, you can gain control and distance.
Start your downswing and feel your left arm stay close to your chest. You never want to feel your left arm get away from your body. This leads to the club getting behind you and some very poor shots.
Keep your left arm straight through impact, then let it fold naturally as you finish. When you get to your finish, your left tricep should be resting by your left armpit.
Tips & Warnings
Place a headcover under your left armpit and try to keep it there throughout the swing.