ofwoodandbone:

You’ll always see spells and charms to counter it, but few teach the skill anymore. 
There are different ways to do it, but in all evil eye spells one thing is made known. 
The curse is given through the left eye of the witch. 
So, if it’s in passing, stare at the target with your left eye open and the right closed, pushing your malice through your gaze and into them. Whisper a malediction against them. “Your wealth will dwindle.” “Your love will break.” “Your life will topple.” 
If you’re both sitting still, you have more time. Stare at them with your left eye. Make the sign of the horns and utter a curse at them while doing this. 
I’ve also seen the middle finger be referred to as the ‘finger of damnation’, so I suppose if you’re fighting with someone, and you flipped them off and ever so slyly winked at them with your right eye while pushing the curse through your left eye, it might be successful. 
Many sources say that it’s more effective if you make eye contact while you do this. The curse goes from the witch’s eye straight into their target’s eye, and according to most folklore on eyes, their soul.