You create kwamis and miraculouses, so you have all knowledge about them. You cant create miraculouses that already existed in the show, instead you make the kwami and miraculous yourself. Every kwami power is related to their duty (example: Kwami of emotion, creates anything with their emotions) also the miraculouses could be ring, earrings, necklace, pendant, talon, bracelet, hat, glasses and etc!. The kwamis name also could only have less than 6 letters (Like xuppu)
(Not by me)