Sadistic Witch (Character Concept Art)

Little character design as part of an environment exercise I'm working on. Basically she runs a seemingly innocent potion shop in the forest, but her goal is actually to attract customers so she can take them captive in the building's basement. There she either kills them and harvests their organs to fabricate cursed items and forbidden potions, or keeps them alive so she can experiment with her magic and hexes on them. You know, typical witch behavior!