Foot Lock From half guard with knee shield

1. Underhook Opponent’s arm
2. Put knee on belly
3. Swing around? and armbar/kneebar opponent’s leg

Alternative: Opponent Locks their own leg with a triangle

4. Move their upper leg above their shins by grabbing their toes and omoplatta it

Escapes while opponent is at step 4

1. Move your hips so your knee is not pressed against their chest
2. Place your foot on their knee
3. Push your leg free

Alternative: If they are holding on too tightly

1. Step over them so your knee is facing down
2. Use your free foot to push yours free in pushing against their hip/thigh/butt