When it comes to Halloween, a skeleton has to look really terrifying, even at its own risk!
A self-inflicted axe blow seems to be a good choice to terrify any creature on Earth! Masochistic skeleton taking a sharp axe and blowing its own skull. The hard strike broke the skull and made the skeleton stick its tongue out and contort in pain. Lightning bolts and stars give an idea of the strength of the impact. Minimalist style, flat colors.