I have been working on keeping my biceps attached to my chest and my elbow pits pointing out. And it is a true game changer.
What I have found is that in my case this applies to putting, chipping, pitching, irons and woods (oh my!)
So now one of my key setup thoughts with all clubs is:
During my setup the final thing I check is to make sure my arms are "plastered" to my chest and my pits are pointing out. This works so well for all clubs and it is really good with the putter and short wedge shots.
Tom is amazing by the way.
Sorry. I must apologize for my above post which it turns out was incomplete. Here are the revised setup keys:
The additon of the word "pressure" of course relates to putting pressure on your lead foot. Just goes to prove that when you think you have it figured out, there is always room for improvement. Be agile out there folks!