After drawing from artefacts as references, I decided to look at how the characters I had researched so far were portrayed in historical art.

I found this historical painting by Hans Thoma from 1886, portraying the Sirens of Greek Mythology.
For me this piece really stood out, the women are depicted nude with bird legs and although that sounds strange, the way Thoma has painted makes it very realistic that these bird legs belong to these women.

Here is my interpretations of the Siren, inspired by Hans Thoma.
I went online and found an archive of nude model poses and references which I used for the torso.  I used a black fine liner and some water on a paint brush to paint with the ink and add the nice shadows.

I also tried to use the nude reference photographs to present an idea of Echidna, Mother of monsters. I used the same ink and wash technique as above.

I also tried to do a similar style using oil pastels, which I don’t enjoy as much to look at but they still look like the Sirens.