Building your own home allows you to customize as much as you want. Learn how easy it can be to add beautiful drywall arches, curved walls, and custom niches. Drywall is easy to work with and also 100 percent recyclable. Simply use a utility knife to score the back (brown) side at 2″ intervals and snap the sheets at each of the scores. The white side of the sheet remains uncut to provide a nice, clean surface for finishing. For convex curves, use plenty of water on the back side so the gypsum will soften and bend easier. Clamp the sheet so it will dry in the new, curved shape and don’t attach the sheet to the framing until it is completely dry.