Move it past your right shoulder by relaxing your grip on your stick. Adjust your grip on your stick at each extreme. The whole document is written from the perspective of a right hander. Once you can do the drill comfortably, speed up the motion and do not look at the puck. Add motion to the drill by swimming diagonally left and right while doing the drill.
Many players already incorporate some amount of puck rolling in their games.
It allows you to execute maneuvers quickly and efficiently. It allows you to shield the puck. It is important to put a hard spin on the puck. This forces the puck to stick on the pool bottom and prevents it from flipping on its edge as you drag it across. Practice this motion so that you can execute it quickly without looking at the puck.