In this one Scott Epstein otherwise known as 'Einstein' goes over a guard pass that puts you in great position to set up the Twister or the mount position.
He makes a really great point about your hip pushing forward as you cut your knee across your opponent's leg. You want to put as much pressure and weight on your opponent as possible and the hip driving forward helps you to do that.
The spin to Twister Side Control is the key to securing the position. One thing I like to do in Twister Side Control is keep my head down tight to my opponent's side. If your head is up they can hook it and reverse the position.
