PGA Professional Jim Flick offers a helpful drill in this video golf lesson that will help you get a feel for the correct speed and distance when you are putting.
He states that putting is no more than utilizing the head of the putter and feeling how it is applied to the back of the ball. Flick demonstrates an easy exercise that involves putting with each arm individually, which will make your putts stronger overall.
The eyes need to be over the ball when setting up, and the putter should be facing the target at the end of each putt. This practice will allow you to get a feel for the right speed and the right distance.