Easiest Winged Liner -
https://www.youtube.com/watch?v=djHFWA5fPrg (this involves tape, an eyeliner pencil, and a synthetic angle brush)
Personally, I find it easiest to use tape (to map out the wing; you can use surgical/medical tape or Scotch tape) and an eyeliner pen. I find it easier than gel/cream liner or a brush-tip liquid eyeliner. You can also map out your wing with eyeshadow on an angle brush, and then go over the top with an eyeliner pen.
(Side note: You don't need to put your username in the subject line, when you post.)