Think of alignment like a set of railroad tracks.  The left rail is your feet line and the right rail is the ball line - or target line.  Many people try to line their body up to the target, but this is a big mistake.  As you can see in the picture, my feet and shoulders are lined up parallel left of the flag.  This is what you want with all clubs.  The only difference is with the length of the club used.  The shorter the club is, the less parallel left you will be lined up.  When practicing, place a couple clubs on the ground for reference.  This will give you a good sense for how the body should be lined up in relationship to your target.

Tip Of the Month By Brad O' Connor

Unlike the full swing, putting requires the utmost in limited and controlled movements. Any swaying, lifting or sliding can cause you to miss putts. The same holds true for your eyes. Any deviation from the golf ball through impact can lead to a variety of miss-hits that affect not only your aim but your distance control as well.