Hold the deck at an angle with the middle and ring finger on one side of the deck, and the thumb on the other side of the deck. Your pointer finger can help steady the deck allowing the back of the cards to rest upon it.
Start springing playing cards from hand to hand with only a few cards at first.
Take 20 cards or more from the top of the deck and hold them between the thumb and the ring and middle finger of your right hand. Your fingers will be resting on the top and bottom of the cards.
Squeeze the pointer and middle fingers of your left hand toward your thumb so that the cards bend in an arch. The top of the arch should be near the palm of your hand.
Work on adding more cards to your left hand so that you are able to build up the strength in your hand necessary to perform the trick of springing playing cards from hand to hand. When you add all 52 cards, the strength needed to bend them in an arch will be more than just a few cards.
Release the pressure in your left hand so that the cards spring from your left hand into your right.
Make your right hand into a claw so that you create almost a net into which your cards can spring.
Spring the playing cards from hand to hand only at a short distance at first. As you get better at the trick, you'll be able to hold your hands further and further apart.
Try springing playing cards from hand to hand with about half the deck at first, and add more and more cards as you get better springing playing cards from hand to hand.
Prevent a bend from developing in your deck by flipping them over each time you spring playing cards from hand to hand. This helps keep the playing cards nice and flat.
Increase the bend in the cards the farther apart your hands are when performing the springing playing cards from hand to hand trick. You'll need the deeper bend to give the cards the impetuous they need to make the distance between your hands.