Does anybody have tips for how to print this off DIY so that it resembles an actual card?
I replied in the other thread as well...
The good news is that, as a permanent technology, this card need not really match anything.
When I make cards, I print on 110lb cardstock and use sleeves. You could just print on paper though, and use a playing card in between the front and back layers.
Since the card is double sided, you'll of course ant a clear sleeve!