I love her jewelry, her extremely long hair, and the underwear that you used for her. Those nails and that wicked facial expression are awesome too. I can see she is floating in the air here since she is the fiend of wind.
I can almost hear the Four Fiends battle theme now!
I love that the pixel artwork of these classic games leaves so much to the imagination - so artists can have their own interpretation how everyone looks like. And you did a very good job with her, Shadow!