Offer the deck to your spectator and ask him to pick any card and memorize it. Tell your spectator to keep the card hidden from you.
Hold the deck in your right hand and drop the cards, a few at a time, into your left palm. Ask your volunteer to say "Stop" at any time. When your volunteer tells you to stop, ask him to place his chosen card on top of the pile of cards in your left hand.
Place the tip of your left pinkie finger on the bottom right corner of your spectator's card. Simultaneously drop the rest of the cards in your right hand on top of your spectator's card, and square up the deck. From your spectator's perspective, the deck will appear normal. However, from your perspective there will be a small "break" in the deck, created by your left pinkie finger. Your spectator's card is beneeath that finger.
Pick up all the cards above the "break" and place them at the bottom of the deck. Your spectator's card will now be the top card in the deck. This move is called an "overhand pass". In order to disguise the overhand pass, perform it as you would the first move in an overhand shuffle, and continue shuffling the deck while taking care to ensure that the spectator's card remains at the top of the deck. This requires some practice to do smoothly, but if performed smoothly, and especially if accompanied by some distracting patter, it will render the overhand pass invisible.
Hold the deck vertically in your left hand, with the face of the bottom card visible to the spectator. Hold it so that the fingers of your left hand wrap around the back of the deck. The last card in the deck is your spectator's card. With your right hand, quickly slide the card downwards about ¼ of an inch so that the bottom of the card sticks out from the rest of the pack.
Place your left pinkie finger on the bottom right corner of your spectator's card and gently curl your left pinkie inwards about an inch. This will create a slight bend in the card. Tell your spectator that you will make his card jump out of the middle of the deck. Bring your pinkie towards your thumb in a sharp downward motion. This will cause the card to flick up and out of the deck. Catch the card in your right hand and return it to your spectator.