Once you learn the growth pattern its the same as shaving your face. Until you get proficient a second mirror to see the back of the head while shaving is a help. After a couple weeks you will have it down. An completely agree with jimbo on the hat comment. I usually wear a ball cap anyways. But especially when out in the sun. Only takes one good burn to "learn" ya. :cen < you don't want your scalp looking like that.