How to tie off cuffs depends on how you made the cuff, because depending on how you made it, you will either end up with two ends, or one. If you have two ends, you can work both ends around the cuff until they meet, and then knot them together a few times. If you have one end, you can use the method I wrote a tutorial for here: How to tie off kandi cuffs. You can probably even come up with your own way of tying off. As long as it's secure, and you make 2-3 knots, it shouldn't matter how exactly you go about it.