OK, this is strictly personal opinion, as technically, the deck looks perfectly fine.
We've seen many decks with a similar appearance go through, most of which were from Kickstarter projects. None used the label of "origami" but the geometric shapes presented were exceptionally similar. I seem to recall they didn't generate a lot of interest the first time around.
Perhaps instead of the geometrics, hit harder on the novelty side - create a ten-step process for making a real origami pip shape - spade, heart, club and diamond - out of a square piece of origami paper, presenting each step on the appropriately numbered spot card as if reading an origami instruction book! THAT would be utterly impressive, I think. Perhaps you can even offer a tier where it's packaged with appropriate paper for making the shapes in red and black!
I could already picture someone preparing for a "girls' night" card game, decorating her apartment with little origami shapes of the pips! It would truly be an origami deck at that point, and the name "Fold" really is a good one. The court shapes you created would fit well with the theme and I don't think I would change them, especially if you modify the spot cards as I described, other than for one small detail - get rid of the border line you have drawn about the characters! With them removed, you'll leave the focus on the origami character art itself.
You can "fudge" the ten-step process a bit, using more steps if needed, simply by placing more than one step on some of the cards, as long as the sequential order of the instructions is preserved in the numbering of the card of each suit. Diamond will be easy, club will be a bit of a challenge!