3 Part Technique - 2on1 Control from Butterfly combines a hold on the elbow and a pistol grip on the cross sleeve of his opponent. Once attained, scoot in close and reach for his belt to employ the Cross Arm & Belt Sweep from Butterfly. The movement you want to make him do resembles a forward roll; concentrate on crossing his sleeve and pull him on top of you as you scoot underneath to prevent him from laying heavily. This sweep is thoroughly battle-tested by Marcelo throughout his entire career; as long as you follow the steps and hold the Cross Arm & Belt firmly, you're golden. Only abandon the control when your opponent has dedicated all of his weight in preventing the Reverse Hook Sweep, and switch for the normal Hook Sweep with Belt & Over Control.