Do you use a technique when painting your walls? For example, I'm always seeing on TV that you should start off with a big W. My nephew who is a contractor says to start with panels, from top to bottom, then, start the 2nd panel overlapping half of the fist column, and so on. Then come back and fill in everything evenly. He said it saves paint and time and covers better. I haven't used his method, but will be testing it in the future.