theory11 — Magic Tricks & the World's Finest Playing Cards

Problem with the SYBIL

You're cradling the packet with 3 fingers, but ideally only the pinky and middle fingers should be making contact. I think the ring finger is making contact and causing the top cards to slide forward.
 
You're cradling the packet with 3 fingers, but ideally only the pinky and middle fingers should be making contact. I think the ring finger is making contact and causing the top cards to slide forward.

Woah! It worked. Thanks. Other people can still help.