Personally I like variations and usually consider minor variations to still be within an edition. But for a master's degree in printmaking my thesis project has to be full of good clean consistent editions. Simply because a master had better be able to know the difference and produce.
Because of the nature of the handmade paper these cards are being printed on there will be some variations that are unavoidable. these handmade papers with four deckled edges (jaggedy untrimmed edges) don't always have even or squared edges. Because of this some of the cards will have a slight border on the top and/or the left edge. (see the top of the right hand card on the very top of this blog)