This specific type of card alter takes up around 75% of the card and is a zoomed-in view of the art of that particular card. See examples.

Inside the United States Mailing INSTRUCTIONS:

When mailing your cards to be altered, please include a self addressed envelope. Please include a copy of your order if you have easy access to a printer. If you do not have access to a printer, please note the number of alters, names of the cards included, and the order number inside the package with your cards. Mail your cards to:
Eric Deschamps
Po Box 364
Gardiner, NY 12525
USA

Outside of the U.S. - International Mailing INSTRUCTIONS:

When mailing your cards in to be altered, add one “International Shipping” item to your cart before checking out. Please include a self addressed envelope and a copy of your order. If you do not have access to a printer, please note the number of signatures, types of signatures, and the order number inside the package with your cards.  Mail your cards to:
Eric Deschamps
Po Box 364
Gardiner, NY 12525
USA