BJJ black belt, UFC fighter and ADCC bronze medalist Ryan Hall shows a great set up for the Shaolin sweep in No Gi.
The Shaolin sweep was popularized by Vitor Shaolin Ribeiro and is a very effective way to reverse position from knee shield half guard. You need to push your opponent back and when they react, you sweep them by doing a backwards roll over your shoulder.
Ryan Hall teaches a No Gi version with some great details: