Re: The Three Worlds (Basic Info)
I like your use of real world gods for the pantheons, even if most of them are obscure. Name recognition helps keep reader interest when deities are concerned. Otherwise, it's just a bunch of names and summaries without any kind of meaning, history, or personality built into them.
This is what happens with your zodiac. I have two suggestions: either find a real-world analogue or stand-in (like Fenrir for your wolf, as an example) or just call them by what they are (The Wolf). Both of these will mess with your months, but I've found most people can't be bothered to remember fantasy time-schedules anyway.