I think Sam called one of them the 'eyebrow trick', where you line your brush up against your nose and to the corner of the eye.
I already do this for brows, but It's so so useful for other things too like if you like the cat eye look and it never seems to be even (like mine). It works really with eyeliner too.
Basically it's made my life 5 times easier, so if anyone else has any sort of tips similar to this one i'd most appreciate it. I love how makeup can be so technical, like in the contouring video.