Get 10 chips. 2 stacks of 5. two different colors. This way you can see if you get it right.
Thumb on left stack
2nd and 3rd fingers on right stack
1st finger between the stacks
lift with 1st finger
fold with thumb and 2nd and 3rd finger.

You might want to start with 2 stacks of 3.
It is not hard it is practice.
When you get it down, start on the 3 chip thumb flip.
Once you get both, everyone will think you are a poker player!!!!!!!