The meaning of Green Tara is goddess of compassion, and why she sits with one foot extended is because she is ready to come to the aid of the suffering in an instant. She is a goddess of compassionate action and protection.
Shiva is both destroyer or purifier and re-creator. The snakes around his neck symbolize power over evil and fertility. He wears a female earring on his left and and a males on his right which symbolizes sexual power and union.