I like the story book theme with the tuckbox, have always found those to be charming in their way. The front of the tuck in this case is a little plain I think, could use some more window dressing or less for more drama. For me it's in the middle at the moment. This deck wouldn't be to my taste because it hits on several key things that tend to make me shy away. First the faux aging background noise on the card faces isn't something that has ever really be a draw for me. Second and much bigger are the Pips, these aren't traditional and don't follow the shape lines of traditional very well. This makes the deck harder to use than I would like it to be. If there was a way that the interesting icons you've chosen could be worked into more traditional pip shapes I think the deck would benefit overall.
I don't understand the Joker image, is the man sneaking up to smack the bear or is he friends with the bear and going to put it down? I like bears, so I don't like the cranky chap with the axe much for wanting to smack the bear. The aces are banners with full bleed art on the bottom of the card face, this is generally a no no in the playing card world because of the cheatability of full bleed card faces as they become warn and used.
For me the card back is going in different directions. You have the novel border which I do like, a map with faction markers, interesting and engaging. Then you have a black frame around a much less detailed center element of a world. I'm sure there is a story being told there, but why not show us something more detailed they're fighting for rather than this world which isn't as engaging as the map frame around it? Drawing our eye to the center I would think then that prime real estate be used to it's greatest advantage. I don't feel that's the case here.
It looks like you have developed interesting factions. I hope you explain them on the campaign page because I, like 99.99999% of everyone else, am lazy and won't likely seek out further information from alternate sites about the factions there in. I need it all laid out before me in a clear and easy to understand way. Speaking of which, are the spades factions undead people or just blue people? It's unclear the JoS appears to be a Ghoul while the QoS doesn't look like a Ghoul. Whatever they are I think the Clubs fellas started the conflict due to finger envy, they're rising up against the five finger men.