crimp

I want to have some suggestions on using crimp cards and short cards. I am recently hoping to practice impromptu magic which allows the spectator to shuffle the deck. How do you use your crimps and short cards to to this effect? Do you have any other ways of using those two types of cards in...

So whenever I start using the decks a lot it naturally will create some crimps here and there, which is confusing whenever I want to use the crimp as a card control. So is there a quick way to uncrimp the cards so that after uncrimping the next crimp I do is the only one remaining? thx