This one is really straight forward. Two inside-out french braids into a messy bun. I didn't part the hair all the way down the back. Just a part up top, on the side, kind of diagonally. When you take hair form only the bottom to turn the braid inside-out, it is easy to do it without a center part down the back.
Yes, this messy bun is slightly different than the one in the video. Some mornings her hair won't cooperate and I improvise. This particular morning, I skipped the part where you tuck it back though the ponytail holder. I ended up using clippies to hold some of the hair. But after a game of kickball or hopscotch, it doesn't look this good. :)