Another way to get your lips in the right position is to say the word “two. " Your lips should not be resting against your teeth. Instead, they should be stretched slightly forward. If your lips are quite dry, lick them before you begin whistling. This may help improve the sound you produce.
For beginners, rest your tongue against your bottom row of teeth. Eventually, you should learn to move the shape of your tongue to form different tones.
Don’t blow hard, just softly at first. You’ll be able to whistle more loudly once you find the right form for your lips and tongue to take. Wet your lips again if they dry out while you’re practicing. Pay attention to the shape of your mouth when you find a note. In what exact position are your lips and tongue? Once you find the note, keep practicing. Try blowing harder in order to sustain the note.
To produce lower tones, you’ll notice your jaw is lower as well. Producing lower tones requires creating a bigger mouth area. You might even point your chin downward when whistling low notes. Your lips will be slightly tighter when you’re producing higher notes. You might lift your head up to whistle a high note. If you’re hissing instead of whistling, your tongue might be too close against the roof of your mouth.
Use your fingers to set your lips into place until you get the positioning correct. [6] X Research source
This whistle will require some practice and exercise. Your jaw, tongue and mouth will all be slightly strained when you whistle this way. Try to broaden and flatten the tip of your tongue until you produce a loud, clear tone. Remember that your tongue should float in your mouth more or less at the level of your bottom row of teeth.
Using both your right and left index fingers. Using both your right and left middle fingers. Using your right and left pinkie fingers. Using the thumb and middle or index finger of the one hand.
Be sure to wash your hands before you put your fingers in your mouth
Close your mouth tight over your fingers to ensure air only goes through the hole between your two fingers for a more concentrated sound.
Don’t blow too hard at first. Gradually increase the strength of the air you blow until you make the right sound. Try different finger combinations. You might not be able to whistle over certain fingers but other fingers might just be the right size to produce a sound.
