I have recently been displaying my ability to my friends to deal perfect poker hands, after perfect faro shuffles etc. The only thing is it involves crimping a card. Is there a correct way to do this. I use New Bicycles and find it difficult to turn a little corner up so as it is not noticed. Also I don't know how to crimp during the workings of the effect. I always do it beforehand, and I tend to use a joker so as not to ruin my cards, as when I have folded the corner, and I do the faro shuffle, the card eventually begins to separate into it's different layers. Any advice?

Depending on the type of crimp required for your routine you could try a breather crimp. It does not involve crimping the actual corner and so should not interfere with your faro shuffles once the crimp has been removed.
The breather crimp is detailed in quite a few places: I am pretty sure it is used for Darwin Ortiz's "Mexican Poker" from "At the Card Table" . I also think it is similar, if not the same, as Martin Nash's "Infinity" crimp. Does that help?

yeah, that helps a lot. cheers for your help

Breather crimp - X folding a card down the middle, has never failed me.