Charlier Cut problem?

[mohejazi]

Recently i have downloaded Spock. The flourish is amazing and i got to the part where I need to do the charlier cut. Im used to doing it with my right hand but now im trying to do it with my left. Heres the problem, when i split the cards in half with my thumb and push the other pack with my index and the cards fall to the side. Help ?

 

[KonTW]

Try to keep your hand horizontal to the ground, and bring your pinkey to the short end of the deck. This will prevent the cards from falling...