These half-women half-birds are loosely based on the Greek stories about sirens. They sang beautiful songs to the saints, foretelling future joys. For mortals, however, the birds were dangerous. Men who heard them would forget everything on earth, follow them, and ultimately die. People would attempt to save themselves from Sirins by shooting cannons, ringing bells and making other loud noises to scare the bird off."
So I tried to make her look cold and kind of evil...ish.
Ref for face:
This girl has some beautiful stock!
Done in Gimp with mouse.