Place both hands on your opponents chest, and in one rapid succession of movements, pick up your hips, swing them and your legs around one of your opponents arms, slide down your opponent's arm like a fire pole keeping pressure on the tricep, place back of one of your knee's against opponent's face, bring heels in, wrap opponent's arm with both of your hands/arms, squeeze knees, lean back, slowly raise hips, thumb up, pull on sleeve of gi if necessary; if you can do all that, your armbars will be solid...right Renato?