Hello everyone, when I print business cards I use one of those 10 blank business cards per sheet paper.

I scan the image of the blank business card template, then I import to Illustrator and then I make the business cards.

The problem is when I print sometimes I get some of the design cut and have to print again until I get it right.

My question is how do I get rid of the guesswork when it comes to printing business cards on a 10 card per sheet? (I believe the problem occurs because my scanner is not exactly 8 1/2 by 11 and therefore there is some margin for error)