What happens next?

How to prepare to exit a cessna 172 in the event of an emergency landing
Stay calm.
Upon notification of a failure and the potential for a crash landing, remain calm and listen to all commands given by the pilot.
Ensure that your lap and shoulder belt (if installed) are tight.
To fasten your seat-belt pull down on the end of the tether. Confirm the lap belt is around your hips and not your abdominal area.