Braulio explains how it is important to keep your elbows tight to your body to prevent an opponent from transitioning from a low mount to a high mount position. After using a hip escape to slightly turn, he grabs a cross sleeve grip to prevent his opponent from using their arm as a post. He continues by using his foot to block their foot and then bridges and rolls to escape and reverse the position finishing on top.
Links to other Parts:
Part 1,
Part 3,
Part 4