Here you go...
Defending against the closed guard position
While in your opponents guard and his ankles locked behind your back keep your head down in your opponents stomach with your hands protecting your neck.
-I would keep postured up to strike and make him work to break me down.
Slip both your hands up and position your fingers inside of your opponents collar bones and press down.
-Iffy with the adreniline pumping
Once he reacts to your cavity press by grabbing your wrists slide both your hands outward and grab both of his biceps to control his arms.
-This is to keep him from keeping you broken down, great idea.
Release the grip of your right hand and drive it up underneath his chin with a right heel palm strike.
-I'd rather posture up and smash his face.
When your opponent moves to apply the arm bar, rise up slightly and left heel palm the inside of your right arm to break the pressure and immediately trap his hands on top of your right arm with your left hand.
-Solid. I would be mindful of my hips and his feet here.
Utilizing reverse motion slide your right arm out and contour his body down and drive your right reverse elbow strike deep into the inside of his left thigh. Drive the point of your right elbow into the inside and middle of his left thigh, breaking his ankles apart and pinning his left leg to the ground while you continue to apply pressure to the sciatic nerve.
-Eh...I've never been a big fan of elbowing the thigh..I've seen some "Quadzillas" out there. Also, you're ripe for a triangle here.
Immediately slide your right knee over and on top of his leg and replace your right elbow with your right knee and continue the pressure now with your right knee/shin. The ball of you right foot is still on the inside of his left leg but your right knee is on the outside of his leg. The whole time you should keep your head close to his chest and abdomen to avoid strikes directly to the face. Maintaining pressure on your opponents body with yours is also important to avoid and submission attempts from your opponent.
While your body is pancaked on his, open your right knee out a bit to create an angle of entry for your left knee. Once this opening is created slide your left knee through the opening and simultaneously slip your left arm palm down between your opponents right arm and right rib cage. As you continue the above sequence, slide your entire body through while driving your left shoulder into your opponent and end up to the left side of your opponents body in side control. During this maneuver finish with your left hand under hook to your opponents left triceps.
-Sounds like a baseball slide pass to me. I love that pass more then my own mother.
Grab his right wrist in your right hand palm away from you and force your right elbow into his eye socket while following with your left hand to the outside of your opponents right arm. This will take his mind off the grab and also allow you to brace you right arm using the side of his head once he pushes it off his face. With your left arm still under his right, grab your own right wrist with your left hand palm down and fingers only to establish the lock. When you have a solid grip and control of his arm force his right elbow down to the right side of his rib cage by sliding his entire arm down while it is locked. When the elbow is down as far as it will go lever up with your left arm using your right wrist as a fulcrum, this will completely dislocate his shoulder.
-Americana? Nothing wrong with that.
Place both hands on his chest; spring up drop your left knee in his left rib cage. Spring off that move, turn to your left and drop a right round house kick to his solar plexus and cover out.