Mix up a small batch of plaster in a bucket. Follow the directions on the package.
Dampen the wall around the repair area. You should have sanded down the texture on the wall surrounding the repair area when you patched the hole. If not, sand it down now. Use a 280-grit sandpaper to smooth the wall surface several inches out from the patch. After sanding, dust off the wall and dampen it with a wet rag. Dampening the wall will help the new plaster adhere to the wall.
Spread the plaster over the patch area and extend it out to cover the area that you sanded smooth.
Ensure that you have filled the patch up to the surface of the wall. Let the plaster set up for 5 to 10 minutes.
Swirl the bristle brush through the plaster material. Copy the pattern created on the rest of the wall.