Take Rope A and place it on top of Rope B, as shown. Be sure to align Rope A's bottom end with the two free ends of Rope B.

Begin braiding where Ropes A & B intersect. Braid as tightly as possible so that your whip keeps its shape properly (i.e. MUCH tighter than the images shown here).

NOTE: Hover your mouse cursor over an image to enlarge it.