How do you tie a helmet strap securely?

To tie a helmet strap securely, first place the helmet on your head and adjust the straps so they are snug. Next, fasten the buckle under your chin and tighten it so that it is comfortably snug. Make sure the strap lies flat against your skin and there are no twists or knots. Finally, double check that the helmet is secure by giving it a gentle tug to ensure it stays in place.