Two Knotty Boys (TKB) Rope Corset:Video This one has a bunch of different ways to add/finish it in the book, and I'll get the tutorial part updated for that tomorrow... You tie it with with the loops/knot/cross at the back, adding an extra on the front bottom part and when you get to the top at the front, then finish it as shown. Then the rope ends can be trailed down through the loops/crosses and run as a crotchrope and tied off to the front, and knots with less gauge rope can be added if you want rope lines over the nipples.
Two Other ways of doing the knots that build the corset PDF
The other way I've seen done and don't have a handy tutorial for, so I'll type it
You'll probably need 50-80 feet of rope for this (going on average person size)
You build the corset slowly downward instead of upward (note: tie it slightly tighter than you would going down). Use the middle (between the nipples) on the lowest rope as the bend (U Shaped part from the top directions)
When you get to the bottom, add a bend/you'll go through your rope bend and then between the legs for a crotch rope (choice of adding knots/etc is up to you)
There's two main tie off options, one preferred for with a partner and one for without. With a partner, run the rope up the back and tie off to the bottom of the chest harness. This provides two things: A) If they arch they get a little relief, bending however tightens the rope B) They can't reach to adjust or untie it. Without a partner, run the ropes back around to the front over the hips/around the waist, and tie off to bottom of corset in front
I have seen the rope corset fron the Two Knotty Boys before and it is really beautiful.
But I have to admit that the idea of beginning with a breast bondage and then tying the corset down and finishing it with a crotch rope sounds damn sexy!