You must to be with a good posture and stable to try stand up.
Grab both lapels with one hand. Use the other hand to reach your opponent’s sleeve. Set his forearm (the sleeve controlled) under your forearm (the same arm that is grabbing his lapels).
Put your foot on the ground at the same side that his controlled arm.
Stand up and get your base.
As soon as you will be standing up, put your back straight. At this moment forget his lapels and use both hand on his controlled arm (avoiding sweeps). Do a light arc with your back driving your head backward and your hip forward; it will help your balance. Don’t bend your body to forward keep your back arced. Sometimes to keep your balance walk forward and backward but never bend your body, keep the arc.
You are standing up with balance so take your time… If you are in right standing posture you will be able to stay like that “all day long”. Only if you are secure, keep one hand controlling his arm and with your other hand set in-between your butt and his locked ankles. Deep your arm with your palm facing your butt, don’t grab nothing let this hand free.
Now is the secret that few people are doing. Shake your hip up and down shortly (not forward and backward and not side to side) at the same time keep deepening your arm in-between his legs trying cupping his thigh with your free hand. With your other elbow (the same arm that controlling his sleeve) force a little bit against his knee. Keep your hip shaking UP and DOWN SHORTLY. His locked ankles will open.
When it’s happen finish a tide cup on his thigh pressing it against your biceps. Don’t let his thigh to go over your shoulder. And your hand that are controlling his sleeve, must to be close to your hip because at this moment you have a high risk to receive a triangle choke. Don’t let his hip slide to the ground keep it close to your hip let only his shoulders plates on the ground. Almost at the same time forget his sleeve and drive this hand in-between your hip and his hip, doing a grip on his pant close to his tailbone.
Only when you will be secure with this grip on his butt (avoiding triangle choke) forget your hand cupping his thigh and with this hand palming down reaching the opponent’s opposite collar doing a good grip and set your forearm on his neck.
Trap his leg using your shoulder and head. Drive his leg to his face like trying to put his knee in his face. At the same time lift his but with your hand over there and force your forearm on his neck (sometimes if he is not protect him self he will tap at this point). Put your knee on the ground at the same side of your forearm on his neck. Move slowly with this knee and your other foot to his side, keeping his leg trapped and pressing his knee against his face.
As soon as you will be on his side change the action on his butt. Instead of lifting his butt, push it to the ground keeping his leg trapped with your head and shoulder. He will be on a really uncomfortable situation and you just need give to him a gap on his leg driving your chin up and let it go to achieve the side control situation.
That is it!