Duke William of Normandy won the battle because was well prepared and had a good army. They prepared carefully for the battle. The Normans had knights on horseback who were skilful fighters.
A utility knife, metal ruler, and a hammer can be faster than trying to carefully saw an opening. Score the drywall a couple times till you are most of the way through, then just knock a hole with the hammer and break the drywall back at the score lines.
Drill a starter hole in the drywall and then cut around these measurements with the keyhole saw (Image 3). Start screwing the drywall to the wall studs (Image 4), sinking each screw below the surface of the drywall, spacing the screws 12 to 16 inches apart. Mudding gives the walls a seamless finish and creates a blank canvas for texture and paint. First, check that all the drywall screws are sunk beneath the surface of the drywall. Next with the 4-inch mud knife, load a small amount of mud into the tray and cover the screw dimples flush with the wall.