You know the first knot you do when you tie your shoes? This is the knot we'll use.
Pull the cords around to the same side that the cord ends are on. Make sure the black goes under the orange, then pull it over the orange (just look at the pictures, I'm not really making sense here am I?).
Then you flip the knife over and do that knot on that side. Make sure you pull it tight. Then you just keep flipping and repeating.