Never liked how most bjj guys finish the kneebar, we always would finish with the foot on the other side of the head (like in the last 2 kneebars) too use the head so they cant turn the leg for the escape, just a personal peference, plus I like using a 'hook' with the inside of the elbow with one arm and with a gable grip to actually rotate the leg so it has a twisting kneebar action