I can cornrow but can't flat-twist to save me. I can't French Braid either...sux. Well, on second thought, a good cornrow is in the eye of the beholder. That might suck as well.
I can't flat twist either and then yesterday I decided to give it a shot. I only flat twisted the front and it turned out ok, I have lots of practice to do. I can cornrow inward and outward.