We started by covering several "karada" (decorative body harness) designs. I demonstrated how to form both diamond ("hishi") and tortoise-shell ("kikkou") designs; the only real difference being that the former has a single pair of side-ropes per section, while the latter has two. You'll notice that in the first link, an overhand knot is used to separate sections; in the second link some wraps between two ropes were used (a method I didn't demonstrate). We also used a third method, the knotless karada, where the separation is achieved just by crossing the two halves of the doubled rope one under the other -- and discussed that if you use a knot, you can use any knot you like, such as a decorative double-coin knot (not one I'd really suggest trying to learn from photos).
We also demonstrated how a karada can be tied anchored to the waist, without a crotch rope; here's a slightly more complicated version of that tie we did, incorporating the arms.
I'd meant to also talk about standalone crotchropes in this section, but totally forget! Like full karadas, a simple crotchrope can be an interesting piece of bondage to wear out, under one's clothes; the easiest method is to simply make a loop around the waist, using a lark's head (at either the front or back), then passing between the legs and securing to the opposite side of the loop. Tied snugly, with the loop above the widest part of the hips so it can't slip down, one of these can be worn for quite some time. Strategically placed knots may be added for emphasis.
We covered three different corset weaves; the larks-head style (shown here with some embellishments), one based on the french whipping, and a final four-rope design that I've never seen written down anywhere; that one starts with two pairs of ropes larks-headed together at their midpoints; the two knots placed at opposite corners of a square, then the ropes run in opposite directions from the starting corners to the remaining corners, where they meet the rope from the other pair, and cross over one another to reverse direction back towards where they started; thus keeping each of the four ropes isolated within its own quadrant while switchbacking up. This is even harder to tie with only two hands than it is to describe; I recommend using four hands.
We talked about how to adapt corset/gauntlet ties around the arms into a lace-up armbinder; in contrast to the link, I started at the wrists and wove up, so that when I got to the top I could use the remaining rope to lace down, making it a 2-rope rather than 3-rope process. I also recommend anchoring the top to the shoulders somehow; but there are plenty of workable variations on this.
I also demonstrated a cinching one-rope armbinder, the basic idea of which is that after wrapping the arms up a bunch, you want to use cinching wraps to yank it all up towards the shoulders, to soak up extra flexibility developed while you're tying.
Or, you can just use a big ugly purse, and screw the rope.