Shakata Hand Gesture (Mudra)
When the Bhramara hasta is held in both hands, we get the Shakata Hasta.
lets take a look at the viniyoga (uses) shloka
rakshasabhinaye prayaha shakato viniyujyate
It says that the Shakata hasta is used to enact a demon. Thus when shakata hasta is held close the face , it indicates vicious teeth of a demon. Also when it is held at the eye level it denotes the protruding eyes.
Also let us know any other interpretation it can have.