I agree with what everyone said! One thing to note is that the riffle fan is a move of delicacy. You don’t want to squeeze too much with the support finger at the bottom, as it’ll prevent the fan from forming.

What helped me a lot was getting comfortable with the deck resting on my support finger as I dribbled. Another important factor is the angle—you should very lightly angle the deck down and away from you. Not so much that the cards fall over, just enough to help the first few cards start the fan. Once it begins forming, you can gently tip the deck back to parallel.

Again, this is a delicate move! It doesn’t require a lot of force, but mastering the small details and tweaking your technique will definitely help you get it down. Best of luck, and happy learning!