If my guess is correct, your method for this is similar to a very old Any Card at Any Number effect. It's a nice method in that sense but as a force I feel like the same thing can be achieved in a faster manner without looking suspicious. There was a fair amount of unnecessary movement which included the spreading of the cards and once you picked up the remainder of the deck. Forcing a card or just having a card selected should take no more than 10 seconds. Once it gets past that, it seems to make the rest of the effect a bit boring or drawn out. This is a great method for a CAAN effect but as a force I think it's a little too long to keep the spectator interested even if you just use it as a prediction effect and nothing else.
-Jarrod Freeman