The first portfolio piece I'm working on based on the song of the same name on the Exodus album is "Devil Inside".
Here's the initial idea I have for the piece, the female character(whose name will be "Ada") in the grasp of this demonic creature.
Here's a sketch of how I want the demon to look like. I used Chaos(character from Dissidia Final Fantasy) as the base for the design and to the left are a few sketches of Ada(I'll get to the name later:) ).
This one is a more refined version of how I want Ada to look in the final piece.
And here's some development work on Ada that I'm doing for this project and for a "Secret Project" that I'm still working on: