Create a consistent putting stroke every time by controlling your putter head acceleration with this penny drill
Go to the practice range with a plan, a drill I think is great is to imagine you are playing your entire golf course on the range and hit every shot from tee to green in your mind
When an instructor refers to open and closed first you must determine if it is the body or the clubface he is talking about, an open clubface has the face aimed to the right while an open stance has your body aimed to the left