Lefties only golf tip: Many golfers come to me on the lesson tee and say “You'll notice I've got a really short swing.” and to be honest with you I'm less worried about that than they are. What you need to understand with the back swing is the golf ball doesn't know whether John Daly hitting it or John Rahm hitting it.
Left Handed Golf Tips: Increase Your Swing Power - Bakswing Length V Leverage And Rotation Lesson by PGA Teaching Pro Adrian Fryer