My Entry for eggpuff' 25 subscriber special!
https://www.planetminecraft.com/forums/pmc/events/the-horoscope-skin-contest-25-sub-special-606851/
Cancers are water signs where their ruling planet is the moon. The keyword they're associated with is feeling!
The Blue palette is to represent that ruling moon and the element water and the stars in the front is cancer's constellation. The flowers are for the cancer's sensitivity.