You want to achieve a crisp, winged eyeshadow or liner-look but the scotch tape method tugs too much on the delicate skin around your eye.
Use 1" sticky tabs by 3M or the Target store brand. I saw this mentioned on a YouTube video by Mayratouchofglam and thought it was brilliant so I had to try it out. Works like a charm!
Remove the tabs and voila, perfect winged liner with no excess tugging on the eye area!