Hanging drywall is not finish carpentry. I’ve always cut my pieces 1/4 or 3/8-inch less than the actual length. The drywall ...

Drywall nails will also do the job ... and both sides of the outside corner beads. On inside corners, only areas with a gap ...

Doing this will make it very easy to install the corner bead. Screw spacing for drywall on walls is 16 inches ... 1/16 of an inch with your second coat. Inside corners are very easy to do.