DeathA kartarimukha Mudra is done when the little finger and the ring finger is bent and pressed against the thumb. While the index finger and the Middle finger is stretched to show a scissor.

Lets take a look at the viniyoga (uses) shloka for Kartarimukha
stripurushayoshtu vishaleshe vishayaspadepi va
luntanenayanante cha marane bhedabhavane
vidhudarthe pyekshayavirahe patane tatha
latayam yujyate yashusakarah [...]