Supposed to be a simple portrait of Raven in the process of being possessed by her father Trigon. I got carried away a bit with details.
Final version
First version, which I slowly chipped away at. Not super awful but still lots of room to work with.
Added Trigon's horns and markings to the image, fixed some facial features.
Decided to make the horns more subtle, added a red glow to the eyes to further represent her possession.
Redid neck and hair. To connect image and background, added red lighting elements to the edges of the drawing and changed the skin tone a bit. Shading was messed with a bit more before reaching the final version (at the top).