From a right lapel grab

Step forward with your right leg, cover their hand with your right and grab under their elbow with your left

Twisting to your left, raise their elbow up with your left

Right hooking block to the front of their face to push their head backward

Push their head backward until the fall on the floor. Place you left hand back on their left to prevent them from releasing, right lower block to the head to hold on the floor.