You have a cool-looking project there. I moved it to the Conversation Parlor because we use the Playing Card Plethora for decks that are International Standard in design - 52 cards plus jokers (optional), four standard suits, 13 standard values, etc.
Good luck on the project! You might reconsider the index placement, though - indices are usually in the upper-left and lower-right corners to accommodate the more than 90% of the world's population that's right-handed!