1. Start with your dominant hand in a "5" handshape (all fingers extended).
2. Place your hand on your chin, with your palm facing you.
3. Move your hand slightly forward and down, as if you are pushing your chin down.
Important Note: The exact movement and placement may vary slightly depending on the individual signer and their regional dialect.
It's best to learn from a qualified ASL instructor or resource to get the most accurate and consistent signing.