The next time you are at the range or on the course, try using your putting stroke while you are chipping around the green. When chipping, your chipping motion is identical in length and style as a putt to the same target.
In a proper chipping setup, the ball will be positioned slightly further back in your stance, which will allow for a descending blow. This will lift the ball over the long grass and start it rolling like a putt as soon as it hits the green. The only difference between the two strokes, is the ball position, the chipping stroke is identical to a putt. Try using your putting grip and stroke the next time you need to chip the ball onto the green. It should be exactly the same motion as your putting stroke!