[Ultima]

Okie here are my suggestions. Please keep in mind I have NO knowledge of tarot cards at all.

Axiom Absolute: A bra/top and maybe arm bands/cuffs? A shield would be cool too.
Celestial Regent: (I got nothing, I think it's good)
Ethereal Passion: A bouquet, box of chocolates, hearts in the background, and/or a red string tied to the avatar's pinky and going 'offscreen'
Feral Virtue: Furry paws?
Heaven's Monarch: A robe and/or sleeves
Immortal Worlds: (I got nothing, but it definitely needs something)
Magus of the Stars: More magician/alchemist accessories. Cool jewelry? More cool tattoos/markings?
Pillar of the Sky: (I got nothing, but it might need more)
Spirit of Treachery: Other than maybe another color or more horns, I think this one's good.