Yes, the basic tip is to move the shoulders, arms, hands and putter all as one unit -- sometimes called a "triangle" but it really looks more like a giant Y. The putter will remain pointing somewhere all the time, not necessarily at your mid-section. Neither of your armpits should close more or open more than they are at the beginning, and your lead-side upper arm should not slide across onto your upper chest. To make this happen, you have to "drive" the stroke from your lead-side shoulder socket. This will dip your entire shoulder frame from shoulder to shoulder in the backstroke. You won't have to do anything with the arms and hands except don't use them at all -- let the lead shoulder power the whole unit.
Cheers!
Geoff Mangum
Putting Coach and Theorist
PuttingZone
http://puttingzone.com
Golf's most advanced putting instruction -- you're either in the PuttingZone, or not.
