I would like a step by step procedure for texturing walls and ceilings. I am starting on a bathroom. walls and ceililng are primed and I have some pre mixed compund. I want to start with the ceiling and do a swirl pattern. I understand I have to roll it on then get a bristle brush and rotate it into the compund. where do I start ? I would think at the edge and how do I get the partial arcs at the edges and corners?