Originally Posted by Onganju
Finer points to the MT Clinch (try this out IronMan, you'll probably like it):
When initiating the clinch, don't wrap your hands around the back of the opponents neck, but cup the backside/crown of their head. Your forearms should follow their jawline, across the clavicle, with your elbows somewhere around your opponents mid-chest area. If you wrap oaround their neck, you're going to have to exert more energy to bring their head down. Since the crown of their head is farther away from the fulcrum point that the head uses to move up and down (the neck itself), applied physics will work in your favor and make it so that your opponent has to exert much more energy to stay upright. Your goal will be their neck eventually (I'll ilustrate why) but not when you're first establishing the clinch.
When establishing the clinch, don't use an grip where you interlace your fingers. Instead use a grip where it is hand over hand, or a palm-to-palm "axehandle" type grip. The interlaced grip is much looser than the other two, and requires too much energy to maintain. Also, if the opponent starts pummeling for inside control or arm control, it's actually very easy for you to end up wrenching digits with an interlaced grip.
Once your grip is established, bring your forearms together to vice around the sides of your opponents neck. This is done easily by bringing your biceps in tight and squeezing your elbows together. The biggest and most common mistake when trying to establish the MT Clinch is not putting the requisite amount of pressure needed to control your opponent. From there, bring the opponents forehead to a rest on your collarbone or the middle of your chest.
Here's the finepoint to truly establish control and make your opponent regret the fact that you've got them tied up: Slip you grip lower to the nape of the neck, and lower your center of gravity by stepping back and bending your knees. This will crank his head up/back and expose his jaw and throat. Once in this position you'll find that leading your opponent around will be easy. Further since their head and neck is locked in tight, if they try to lower levels and shoot, or wrap you up with their arms it will be difficult because: 1) It hurts and 2) Your waist and lower body are farther away from them. From this position, your primed to fire away at the body or head of your opponent with knees.
If the opponent starts to step forward to come close, you can counter by stepping back and circling away with the opposite side leg. So if your opponent steps forward with their left leg, you step back with your left and turn to your left 90 degrees. They will need to follow you or they will fall to their right side. If they fall, no problem, start working your ground game. If they follow you to stay upright, right when their other leg starts to come forward shoot your left knee in (since it is in the perfect position to use the attack).
Does that make sense? I hope it does. If anyone is interested, I can give you ways to break the clinch.