Cool Idea! Even if you didn't manage to polish the game as much as you would have liked, it is something understandable due to the short timeframe and you still managed to show a very unique concept with more than enough potential to make it into a great game if you decide to continue with it and add some more variety and polish.
Something I would really like in a future version is a bit more feedback when reordering the cards. It was a bit confusing for me to know where was I placing them, but I think that if the neighboring cards moved a bit to make space for the new card or something similar it would be much clearer.
Great game overall ^_^