Thai Clinch is a very useful way to control your opponent's head and movement.
1. One or two hands place behind the opponent's head (not neck) with your palm facing you.
2. Bring your elbows together and/or to your mid-section. It help create control.
3. Your position: Head up facing the opponent overlooking their shoulder and back straight.
Tips: When in clinch, bring your elbow together and toward your mid-section will cause the opponent to bend over. That will cause the opponent to be unbalance and uncomfortable.
Looking forward will add weight onto the opponents head/neck