A simple colour change to try out.  S. W. Erdnase was a pseudonym of the author of The Expert at the Card Table, a book detailing sleight of hand and cheating techniques using playing cards, as well as legerdemain. Still considered essential reading for any card magician, the book, known also as either the Bible or, commonly, just Erdnase, has been in continual publication since 1902. Erdnase’s true identity is one of the enduring mysteries of the magic community. I did not mention on the video how important the angle is with this sleight. The deck should tilt slightly downward, as you can see in the video the wrong angle makes the move easy to spot