2. EXTEND FULLY
If you want to create maximum power you need to extend fully on both sides of the ball. A lot of amateurs swing the club to the inside on the takeaway, which forces their elbows to fold. Then on the follow-through, these same players often have a chicken-wing position with the left elbow bent. Not good. Notice how my left arm is nice and straight in my takeaway and the club is pointing down the line, away from the target. I often make a half swing like this to check that I'm doing it correctly. I want to feel the same thing swinging past the ballboth arms straight and extended down the target line.