The best training exercise I know...
Alignment is relatively easy. Whether you like to stand with your feet slightly open or closed, the key is to make sure that your hips and your shoulders are square to your line. That way you will be encouraged to swing the putter on a natural path. And this drill is fantastic when it comes to tracking your stroke and grooving a natural path that sees the putter swing back and forth on your line to the hole. Simply place two clubs side-by-side to create this putting corridor, leaving about half an inch either side of your putter head. Then it’s all about repeating your stroke and rattling the ball into the back of the hole.
Having those tracks gives you instand feedback as to the line of your stroke – take it too far outside and you strike the outer shaft, take it on the inside and you touch the inner shaft. A true stroke runs clear all the way back and through, sending the ball straight into the hole.

Repeating success: do this as often as you can – it’s one of the best drills ever to groove a solid stroke