so I take this OUTER strand on the left, behind the braid, under the first/outer strand it meets...
and back OVER the next/inner one it meets,...
.... pulled tightly, hanging to the left. If you look now, I've done one strand from each side and the braid looks exactly like it did before I began. The inner two are crossed with the top one hanging to the left.
Like I said, I took a lot of pictures. Here's a collage of this very braid with each strand being manipulated then pulled tight. After a couple inches, I thread into the mix a strand of leaves, snugging the base of the leaf tightly into the weave. Seriously? This was many, many hours of braiding.