Best advice…. and this is gonna sound wrong…..but get your woman to help spot for ya ( unless you are one…in which case your golden). Most cases she will watch and look and walk around and look again and let you know if your to high or too low. They are more critical of placement then we guys seem to be. Think I am wrong… ask a married man that has had to move a couple of times and hang pictures. Nothing like a person not HAVING to do the actual labor to have the luxury of being perfect, where as the one who IS doing the labor gets frustrated or impatient and says “screw it they only see one side at a time”
Other then that …… measure twice….look once…measure again ..then cut. A mock up stencil would be a good idea to.
Yesterday is a memory, tomorrow is a prediction, but today…… is a Bi**h