Hang the abutting panel leaving it long and trim it to create a tight well fitted corner.
How to hang sheetrock on walls.
On the outside corners apply a layer of compound to either side of the corner.
Cut a piece of drywall long so that it hangs over the corner.
A lift tilts from vertical to horizontal.
Fasten the bead with 1 inch drywall nails hammered every 10 inches through the perforations in each leg so that the legs are tight to the wall and the corner is not distorted in any way.
Trim it with a spiral saw after it s in place.
A lift makes it possible to hang rock solo but it s still nice to have a helper for loading the rock onto the lift.
Do the same on the adjoining wall.
Cut paper beading to fit the height of the wall and press it into place with your fingers.