When I twist my hair I work from back to front. After washing, conditioning, and detangling, I grab a section not exceeding an inch wide. Divide that section into two. Twist all the way down to the ends. I make sure my tension while twisting is taut but not tight, because once you let go of the twist it will loosen up. I like to work on damp hair, so I keep a spray bottle nearby.
As I move up toward the front of my head, I start parting sections in the direction I want my hair to fall. ORS Loc & Twist gel is good to use to fight frizzies and it doesn't leave your hair crunchy.