I think the artwork is well done. It looks like the indices are a bit small. I would base the size of those off of standard poker cards. I feel like the back design should be inversed of what you have. Not inversed in color, but basically right now the strong areas of your design are towards the edges, I think backs work better when they're strong in the center and work their way out towards the edges (if that makes sense). I also think your court faces would look stronger if the characters were enlarged and took up the majority of the card, and then have the flourishing just as a filler of whatever space is left. Right now there is a lot of unnecessary ornamentation around the characters, in my opinion. Cards are small enough as it is. It's looking pretty sweet though.