I'm not sure how exactly it says to do it in the CG book, i've not read it, I just remember Pedaheh mentioning it. I think she said to take hair from below the ears and secure it with a band, around the rest of your hair.
But yeah, that's pretty much how I do it. I just grab two small sections of hair from the underneath of my hair, at the nape of my neck, then bring them around over the top of the rest of the hair and clip it in place off to the side. I like to take it from underneath instead to keep my hair slightly away from neck.