http://www.ComprehensiveGolf.com Golf swing tips. Downswing. How to golf video tips 5. This how to golf video is number 5 in a series of eight Golf swing tips. The first position after the top of the back swing is a mirror position of one we achieved on the back swing and that’s where the left arm is parallel to the ground. Similar to that position we achieved on the back swing- on the down swing the left arm will not be straight down the ball target line- it will be slightly to the right of it. It won’t be exactly parallel; it will be just slightly inside of it, the same as on the back swing.