An idea for the aces. I always wanted to make sure all the aces looked special, not just the spades.
OK, a few things going on here.
Your black suits have the suit pips upside down in the indices.
It's not a good idea to mix red and black in the same pip - it can make them too easy to confuse for other pips. And your diamonds, hearts and spades are not adequately different from each other to avoid confusing them for each other.
DON'T BE DIFFERENT JUST FOR THE SAKE OF BEING DIFFERENT. If you have a reason, a solid reason, for being different, make that clear in the design. You want hard angles, great - make hard angles, but those color and shape mix-ups have nothing to do with hard angles, or angles of any kind, for that matter. Don't just think "angular" - think "functional" as well. It has to work as a deck of cards, or it's not really a deck of cards anymore, it's just a bunch of arty looking designs that look like Mondrian variants seen from the wrong angle.