WIN THE HEAD BATTLE!!!!! i cant stress that enough. when a guy has you against the cage in a clinch position/over under, it is very important to get your forehead in the side of his jaw, temple, chin, or even under the chin. this will let you level change, stop his level change, help keep your power in your hips, and help you keep him from smashing you against the cage. the best take down defense against the cage is keeping him from controlling you against it. also, look to wizzer and underhook. really try not to let him get your hips flat against the cage. for example, if you are wizzering with your left arm, your left hip should be off the cage and you right hip against it or away from it. if he has alot of pressure against the cage, use pummeling to get your underhooks while switching your hips against the cage. this will keep you moving and not let him crush you and then level change for the shot. hope this helps.