: When your shield is flattened, you may need to "low leg" or shrimp out to create space and re-insert the top knee to reset the distance. Highly Recommended Instructionals
: Use your arms to create "frames" (stiff structures) against the opponent's neck, shoulders, or hips to prevent them from securing a cross-face or chest-to-chest control. Half Guard Retention
If you are looking for deep dives into this topic, experts recommend the following resources: : When your shield is flattened, you may
: Always strive to keep your feet, knees, and elbows "inside"—between your body and your opponent's. If your opponent wins the inside position, they are much closer to passing. : When your shield is flattened