Wash and dry your hands
Curl your tongue back slightly
Place the tips of your index and middle fingers together, or use both index fingers
Wet your lips slightly
Tuck your lips over your teeth
Insert your fingers into your mouth until they press against your tongue
Keep your fingers centered and angled slightly inward
Leave a small gap between your fingers for air to pass through
Take a deep breath
Blow forcefully while keeping your lips tight around your fingers
Adjust finger position, tongue position, and lip tension until a whistle forms
Practice changing the angle and depth of your fingers for a louder whistle