Lefties only golf tip: One of your key successes in putting is to build a stable set up in a stable stroke and also the ability to see parallel lines. I have set two canes out here to just give me a guide but what I see with many amateurs is their feet or one way their shoulders are another their eyes are another. So what we really need to do is get everything parallel to the start.
Left Handed Golf Tips: Putting Setup Lesson by PGA Teaching Pro Adrian Fryer