Place it in mouth – Next step in here is to put these already “v” shaped fingers under your tongue, where a bottom of “v” is going to be there in your mouth, behind your lower teeth. Close your lips and leave some gap in the mid of fingers.
Blow through hole – All you got to now is blow through that hole and make that amazing whistle. Image Source
And, there you go! Now, you are all set to make that amazing sound through your mouth using various different methods. Though it won’t be possible to get it done at first but as you would practice frequently you will get it done.
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