Plague potion : pre-prod

Here is the concept arts of a Plague potion for an Isart exercise.
I had to conceptualize a magic potion with a clear effect on who may drink it and apply Prince of Persia : the lost crown's graphic chart.
So I chose to make a Plague potion that give...plague, good job guessing 👏👏👏
After chosing my subject and making a bunch of researches for references, I proceeded to make a bunch of messy sketches on Photoshot, that I narrowed to one I improved to it's better self. I color keyed and went straight to the painting rendering the textures as a preparation for the 3D production of the asset.