Position your tongue closer to the roof of your mouth by drawing the tip toward your bottom front teeth. Place the sides of your tongue alongside your molars. This will fatten your tongue, narrowing the air channel along your palette while simultaneously creating a wider gap at the front of your mouth through which to push the air. The positioning here is crucial. To produce a whistle, you must force air around a sharp bend, which in this case is created by your front teeth and tongue. Forcing the air higher along your palette makes this bend even sharper.
Pout your lips outwards like you are kissing and form a small hole, smaller than the size of the circumference of a pencil. Your lips should be kind of hard and tense with lots of wrinkles – especially your bottom lip. It should protrude out a little more than your top lip. Don’t let your tongue touch the top or bottom of your mouth. Instead, let it hover in your mouth around the back of your front teeth.
When you inhale, it should be difficult to get your breath – that’s how small the hole formed by your lips should be. You will then be able to control your breath through this hole, making it last much longer than you would if you were speaking or singing.
It’s all with the tongue and the cheeks. When you “blow” air through your lips, the main problem is either you’re blowing too much air, or the pucker is not quite right.
Try blowing; and if there is a sound, move your tongue around to how and what position gives you the best tone and output. The pitch comes from the amount of volume (physical volume) in the cavity you create between the opening in your lips and the back of your throat. The smaller this is, the higher the pitch will be and thus the larger this cavity is, the lower the pitch will be. In other words, the closer your tongue is to your mouth, the higher the pitch you produce.
The vibrato effect comes from moving your tongue back and forth very slightly to waver from two notes. As said before, it’s all with the tongue and cheeks and practice. If you can whistle, whistle all the time.
By wetting, we don’t mean drenched. Just moisten the inside of your lips with your tongue lightly, and get back to practicing. If there’s a difference, this method may work for you.
Once you find the right spot for the tip of your tongue, start experimenting with moving the middle of your tongue. This changes to air flow and will thus change your pitch. Once you find other pitches, it’s just a matter of knowing which position correlates to which note.
Ask a few friends how they do it; you may be surprised that they all have slightly different techniques. No one’s mouth is the exact same shape and size, so it makes sense that we all have to whistle slightly different ways.
