Magic Flashing Paddle

This a Magic Flashing Paddle, and it is a magic trick that is very visual, and great for close-up magic. It is a simple trick that you can learn in about 15 minutes. The trick uses a sleight of hand motion called: a paddle motion. A paddle motion is a super small rolling motion between your index finger and thumb, which rolls the paddle while pretending to show both sides. Link to video below
https://www.youtube.com/watch?v=wQ2iwQGj3so&t=21s
I have made this very easy design in Tinkercad, and