How do I maintain mount in BJJ?

Maintaining mount is a skill that requires as much practice as escaping it. The base principle is to keep your center of gravity low with your hips heavy on their torso. Grapevine your legs by hooking your feet inside their thighs to prevent the bridge and roll. When they bridge, do not panic and do not post your hands wide because that creates space for the elbow-knee escape. Instead, ride the bridge by shifting your weight and letting it exhaust them. When they attempt the elbow-knee escape by shrimping, transition to technical mount by bringing one knee up high near their head. This stops the escape and sets up armbar and collar choke attacks. Alternate between threatening submissions and maintaining control. If you only hold mount without attacking, the referee may penalize you for stalling in competition, and your opponent will have unlimited time to plan their escape.