You are just an ordinary 18 year old human girl. You have white skin, dark hair, are 174cm tall and you always do the same old boring stuff, wake up go to school, do your homework, eat and sleep, go to the bathroom if you needed to, go to the doctor if needed and all that other stuff but eventually all of that is about to change. You will leave your ordinary life and begin life anew as something else.
You don't know it yet, but your changes are going to come unto you because of your astrological sign, you know a lot about the Zodiac, but there is a lot more to it than just that. whatever Zodiac sign you have, you will turn into it. However you only have 8 possible Astrological signs out of the 12. Only 8 of those signs are related to animals after all, so you don't have any of the other 4 as possible signs.
The 8 Zodiac signs you could possibly have are Pisces, Aries, Taurus, Cancer, Leo, Scorpio, Sagittarius, and Capricorn. Which one you have is depended on what month you were born on.
Depending on which Sign you have, you take on traits of what they have. For example Pisces is a fish, so you take on fish-like qualities like scales and a tail like a mermaid and etc. Aries you turn into an Ewe, Taurus a Cow, etc.