I'm really enjoying this stamp ... can you tell? :-) To make the shaped card, I welded two of the snowglobes, set at blackout, together using DS, and cut at 5". I then cut another single snowglobe, decorated it and glued it to the front of the card. This card fits in a 5.25" x 5.25" envelope. I have never added extra postage when mailing out a card this size card and not one of them has ever come back, so I think that this size still fits in the USPS standard size regulations.