Creepy female character drawing

[Velma]

How can we draw a very creepy and ugly looking female fictional character, that also have a realistic look, not a fantasy one like some fantasy witches, vampires, or what we see in horror movies etc.
How should we make make her facial and physical features, like her skin, nose, mouth, eyes, cheeks etc. Can you give me some existing examples.

 

[snoball]

Don't you go drawing a portrait of me!!

 

[JStarr]

How can we draw a very creepy and ugly looking female fictional character, that also have a realistic look, not a fantasy one like some fantasy witches, vampires, or what we see in horror movies etc.
How should we make make her facial and physical features, like her skin, nose, mouth, eyes, cheeks etc. Can you give me some existing examples.

Google The Witches and then click "images"- you'll see how they made every day women appear to be witches-
Anjelica Huston in Roald Dahl's The Witches:

Too, you can look up Terry Pratchett's witches- Granny Weatherwax, Nanny Ogg, Queen Magrat, and Agnes Nit, are the most popular. Most of these women have been caricatured, but a few artists have tried to split the difference between fantasy and reality.
Granny and Nanny: