This video showed up on my YouTube timeline today, it’s Bernardo Faria talking about pressure passing. Some good stuff in this video. He demonstrates how to angle your body so that more of your weight is on your opponents body. For example, using your shoulder to pin your opponent to the ground when passing can be more effective if you angle your body in such a way that more of the weight is going into that shoulder.
This can be generalized to say that when attempting a pressure pass, if you can focus your weight into a small point on your body and apply that point to your opponent then you will generate more pressure. Pedro Vianna talks about applying pressure in this manner to large muscles. He says that if you can focus pressure in the middle of a large muscle then that becomes like a pressure point, making things very uncomfortable for your opponent.
Check out the video to hear Fari discuss pressure passing. It’s a short video, but has some great info.