No, dont do anything to the cards,.identify your natural hollows, and hang the card on the holder descrided above in them. under the arm is favorite. if you are skinny, this is no issue. Its only a problem if your chubby like me , because you loose the places.
This is why you dont have fat dove workers.
I would also wear a jacket. pin the holders onto the jacket, not onto you. The jacket is going to hang away from your body, giving you more space. If it doesnt you need to get a bigger jacket. The most important thing to remember when using any knid of body load is, you need clothes that will accomodate you... and the load.
Have 2 on the left, and 2 on the right, one above the other.
If this is for a multi out effect, you will be able to arange them, into an impromptu index.
you're like Yoda.you dont say much, but what you do say is worth listening to....
Greg Wilson about.... Me.