Start with a cross-grip on the sleeve, and, while pulling the arm across your body, frame off of your opponent's shoulder with your free hand (it's my right hand in the video, so let's just refer to it that way from here on out). While pushing your partner's left shoulder back with your right hand, your goal is to jump past their shoulder with your right thigh, locking your guard with both of your partner's arms inside, but with only one shoulder (their right shoulder) inside the space. Once you've jumped over their shoulder, your partner may still be able to shrug their shoulder back through, getting back into your (traditional) closed guard. Have your partner try this the first few times if your'e doing this for the first time as technique or as a drill, so you can make the proper adjustments. One quick trick: you can squeeze your knees together, which effectively brings your partner's shoulders together. From here, you can re-bite down with your heels curling in toward the ground, making the "high bite" considerably higher. Next up, swim your right hand through to your "pocket," making a much better armbar finish grip. Use your free left hand to grip your partner's pants, near the foot. Use this grip to off-balance your partner so that you can finish the armbar as they resist the sweep.