Wrist Coil + Cinch Noose: Struggling with the Technique.

Over the last few weeks, I’ve been experimenting with the Wrist Coil and Cinch Noose method outlined on the community’s “basic” page. The link to that reference is here: Somehow, it just doesn’t seem to work for me! I’m using a shoelace as the cinch noose and a strap from my backpack (the same material used to adjust shoulder fit) as the rope. The issue is I struggle to visualize the process from the illustration. A video or animated GIF would make things much clearer. However, if that’s not possible, I’ll try to explain my method and ask some questions:

1. I use two lengths of cord (the shoelace plus the ‘backpack’ strap).
2. I create a cinch noose following the diagram: I form a “U” shape with the rope, then fold the end back underneath the “U.” This creates a configuration identical to the first image in this guide: the referenced community page But what’s the final step? Do I twist the loose end over the top loop and wrap it around? Or do I tuck the loose end inside the top loop before winding up? Also, I assume the last part involves threading the loose end into that now-tiny loop to tighten everything?
3. For the wrist coil, I tie the ends of the ‘backpack’ strap together with a simple knot to form an “O” large enough for my wrists.
4. I slide the cinch noose over the wrist coil.
5. I insert my wrists into the wrist coil from opposite sides, keeping the cinch noose centered. Then I rotate them so both are on the same side and the rope forms a figure-eight shape.
6. I secure the loose end of the cinch noose to another body part (I’ve tried looping it around my ankles, between my testicles with hands behind back… pulling the cinch noose “tight” was quite ‘interesting’ in that setup since it pulls heavily on the rope).
7. I tighten the cinch noose by extending my legs and/or lifting my hands.
8. Now I’m bound, and the “rope cuffs” feel secure. However, escape is still possible, usually by rotating my hands again (loosening the cinch) and making them smaller (my sweating helps them slide out of the cuffs more easily). I’ve thought about this for a long time and tested various methods, but I’m not sure what I’m doing wrong? How do I achieve proper “wrist coil + cinch noose = bound frustration” rope cuffs?