mischievous

[devil]

This sign is a version of the sign for "devil." Well, actually it is the same sign as devil, EXCEPT for the facial expression (non-manual marker). The sign "devil" uses a serious expression with a set jaw and penetrating gaze. The sign "mischievous" uses a mischievous facial expression: an exaggerated smile, you duck the head forward a bit, hunch the shoulders up a bit, and squint the eyes somewhat.

mischievous:
In this sign I'm keeping my thumb on my head, but I don't have to. I could start the sign an inch or two out from my head and as I bend my index and middle finger I could bring the thumb down to the head and repeat. Either way is fine.

Notes:
Mischievous uses a "three hand" and bends and unbends the fingers at the second and third knuckles (so, yes, it does form a claw shape).
The sign "HORSE" uses an "H or U" hand with the thumb extended, and the fingers together. The fingers bend at the first (large) knuckles.