A few nights ago at the range I was hitting my irons flush when I had the feeling of turning my left arm to the right on the takeaway and then back to the left on the down swing. I 100% got more yardage which was something I struggled with on the par 3's in my previous round.
The more left you go on the down swing the more drawer you get. I think it’s a similar concept for hitting driver.
Think about kicking a soccer ball with drawer. I turn my right foot to the right on the takeaway and then have my foot coming back to the left on the strike with the ball.