This is a great effect. It will take some practice (may I also suggest a close up mat).
Prior to purchasing, I knew how the effect was done but still wanted this to be able to perform.
I liked the look of the card in the demo video. However, the cards you receive do not have the white
rim along the sides as bicycle playing cards do on the back. This may not be a huge issue for most,
but the cards stand out a bit more while holding the deck.
Will a spectator notice,
probably not. However, the cards Justin Flom uses are slightly different than the ones that you now
receive.
I am excited to be able to perform this though, and I am sure you will too!