Your practice stroke should replicate the stroke you intend for your real putt. Don't rush the practice stroke. When you practice putting, place a coin under the ball. Don't look up until you determine whether the coin is heads or tails. This will teach you to keep your head down through the putt.
Pace is more important in putting.
Keggi Keep a firm, comfortable grip on the putter. If you're relaxed and loose, you'll be more consistent. Terrain is the most important issue for reading greens. Look at your putt from all sides if you have time and will not slow play down. If time does not allow, I think looking at your putt from behind and from one side, will show you the right line.