Can someone teach me to whistle with my fingers?

Can someone teach me to whistle with my fingers?
Curl up the tip of your tongue backwards toward your throat so it overlapping the rest of your tongue, you only need it to fold back around of a inch.Then take any 2 fingers that can be joined together at the tips ( commonly your pinkie and 1st finger and place the tips of the 2 joined fingers tips lightly against the stubby end of what is now the tip of your tong and blow... (practise makes perfect)