Bondage for tied torture
My absolute favorite position for clit torture is one that allows for a little bit of wiggling, but not so much that it gets in the way of my fun. It's also pretty easy to DIY, so feel free to take this as a recommendation!
All you'll need is a bed with a headboard, a collar, cuffs, some rope, and a spreader bar (aka the best item you can ever buy for bondage play!). If you don't already have all of these things, I promise you, they're worth the money because they can be used in so many different ways.
But we're not talking about lots of different ways right now, we're talking about my favorite way! So, to tie your lady for inescapable torment, have her sit on the bed with her back against the headboard. If it's wooden, I would give her a pillow to pad her back and neck.
Next, attach the spreader bar above her knees. If the ties aren't long enough, get creative with the rope because the vertical positioning along her legs is essential. If the spreader is below her knees, she'll be able to close her thighs. The biggest struggle with clit torture is how easy it is for the legs to shut and completely hide the clit. A high spreader bar is a great solution, and it has to be high - a spreader bar at the ankles still usually leaves too much wiggle room. After it's tied, open it as wide as she can handle so she can't close her thighs at all.
After the spreader bar is holding her open, you want to solve the other problem you'll encounter during clit torture: even with her legs spread, she can hide her clit by tilting her hips. How often have you been playing and enjoying your fun only to see the victim squirm away and hide her clit in her labia? The solution is controlling her hip angles - her legs both have to be held open and her hips have to be immobilized.
And it's here that the real fun begins! Tie the rope between the center of the spreader bar and her collar and tighten it up. Her knees will pull up to her chest and reveal her whole spread slit. The tension will hold her hips in place and her clit vulnerable to any torture you can dream up. You'll have to play around with the tightness of the tie because you'll usually find that she can wiggle around more than she lets on when you're first tying her. I suggest doing a preliminary tie, giving a good pinch right on the nub as a test, and adjusting the tightness as necessary.
Ultimately, she may be able to wiggle around and topple onto one side or the other, but she won't be able to close her legs or shift her hip angle even if she does (and its funny to watch her flop like a fish while she's being tortured). You can tug her away from the headboard a bit if you want to give her less mobility and leave her in more of a horizontal position with her head propped up by the headboard. A couple additional pillows around her sides can also limit movement, or you can hold her in place with the spreader bar.
The final step is to tie her hands out of the way if you like. Some doms prefer to train their subs to keep their hands away with willpower alone, but you have a couple options if you do want to tie her in this position. I'm a fan of tying cuffs to collar because it suspends her hands just out of reach of her cunt - she can stretch and try to touch, but she'll never be able to quite make it. The other option is to tie her hands to the spreader bar near her knees, which leaves her feeling completely exposed and helpless.
And then begin. Start with pumping or banding, pinching or poking, scraping with a piece of sandpaper, beating with a studded paddle. Clamp the bulb and tie it up to the spreader bar and pull tighter and tighter while you watch her eyes widen. Tell her that her clit needs to stretch while you both watch it pull out and away from its hood.
The best part of this position is how close her cunt is to her face so she has a front row to what you decide to inflict on her. So close yet so far away because, tied as she is, she has no way to stop you. It's also a great view for you - you can clearly see her lovely facial expressions while you're working on her bits.