TECHNIQUES:

MOUNT HEADLOCK ESCAPE: An inexperienced opponent will often reach for a headlock, thinking it will secure you. Even after you take him to the ground, he will keep his grip on your neck as a Hail Mary to try to control you. The good news is, not only do you have an easy route to escape to his back but also to finish the mounted armbar.
ARMBAR FROM MOUNT (OPPONENT SIDEWAYS): There are lots of attacking options from the top mount in jiu jitsu, but the easiest submissions come from responding to your partner’s reaction to your first attack. For the armbar from the mount when your opponent is sideways, you bait a cross choke first. Your partner responds by trying to grab your arm and roll you over in an “upa” escape. When he does, transfer your weight and isolate his arm for the armbar.
MOUNT CHOKE WHEN OPPONENT TURNS ON SIDE: A variation to the last move, the mount choke when your opponent turns onto his side is a great option for finishing the fight. Work the same way to isolate his entire side, and use your hand on the collar grip to help feed a tight choke to the other hand.