What is a proper way to tape a 6” round hole from can light?
First smooth out those edges and make sure they're flat. No need to cut out squares and re-plug. Then use five or six equal lengths of paper tape to tape the area. I like to butt joint the sides of the tape and not overlap it. I also wouldn't use the mesh tape because if you're not careful you'll see the mesh imprint on the finished wall. Be prepared to do a lot of finishing touch up because ceiling flaws are easy to see.