My husband and I have remodeled 3 homes with the help of my father in law who has was the forman for building houses and apartment complexes. We also had the help of a friend whose dad works for a tile and flooring company. So on our 7th bathroom, I’m feeling confident I know what you need! I should add, I am the tiler. My husband does the cutting and I do the measuring, mortar, spacing and setting!