caberet card to cards..

Cabaret Card to Cards
Effect.
The magician offers to show a card trick.
He removes from his pocket a red backed deck which he shuffles as he approaches his helper.
He runs his thumb down the side of the deck and requests that the spectator says stop. This is done, and the spectator is given a pen, and is asked to sign the face of his chosen card.
The deck is cut, and the signed card is buried in the centre of the deck.
As the magician crosses over to a second spectator, to have the cards shuffled, he trips, sending the deck of cards showering all over the place.
Naturally the spectator starts to pick up the cards, but the magician says he has a second, blue backed deck in his pocket, and that he will start over.
It’s removed, he approaches the first spectator, and asks what the chosen card was, because it’s easier to remember one card. He names his card, and the magician thumbs through the deck.
The named card is found, but what’s this? Somehow the card has a red back and the spectator’s signature on the face!
How.
Firstly you need the two decks. One the red backed deck has a force card on the top.
Then, you remove the duplicate of this card from the blue deck. Now cut the deck in half, and bow half the cards one way, and the other half the other. When placed together in the box, this will create a nice little gap in the deck.
This is where the signed card will end up. Also, cut off the flap in the card box, which may fall over the deck making it harder to get to when you need to. And make sure that the deck is in the pocketwith its face towards your body.
Now, in performance you force the top card. Ive used the riffle shuffle in the explanation, but any force will do. Have it signed, and placed back in the deck. Control it to the bottom of the deck, using your favorite method..(Ive always wanted to say that)

Now for the misdirection.
As you walk over to the second person, you pretend to trip, as you do so palm the card off the bottom of the deck, and spring the rest of the pack out. Every set of eyes will be watching the cards spring, and land on the floor. Then every set of eyes will be looking at the spectator going to pick up the cards.
During these few moments, you have all the time in the world to stick your hand containing the card, into your pocket, and thrust the chosen signed card deep into the boxed blue deck.
Now your work is done. The reveal is as written.
The ruse of chucking the cards over the spectator probably has many uses. It definatly creates quite a substantial amount of misdirection that’s for sure.