I've been a fan of the upper underneath lashline liner (that usually ends up on the upper waterline as well) called tightlining ever since I learned about it a few years ago. I originally posted back in March 2011 my difficulties with twitchy spazzy lids while doing it but I figured out the trick to avoid this. I determined with me, it depends where my pupil/iris is (aka the non-white part of your eye). If I'm looking where the pencil is, my lids will twitch. If I look away so all I can potentially stab is the whites (pfft who cares, that happens all the time :S) - no twitch.
Here I've already tightlined the left eye with mascara applied to both eyes - Laura Mercier Full Blown Volume Lash Building Mascara. For the liner, I prefer MAKE UP FOR EVER Aqua Eyes 0L, it's a little less creamy than Urban Decay 24/7 pencils and for me has better lasting power. It's not the most pigmented but I'm not looking for a deeply dark look like I might want for the lower waterline.
The technique I use now gets more liner on my upper waterline (which then just makes more cleanup due to transfer on to lower lashline/tear duct). I place the pencil at the upper waterline, close my lid for the most part and just slide back and forth. There's lots of demos on YouTube, I will try to remember to film a clip next time I have the camera out!
And here's the end result! You can fake some extra lash volume your mascara may be lacking without taking any space on your upper lid. I love how it adds intensity, one of my favorite subtle techniques. :)
Do you tightline? Have a favorite combination of products? What's your favorite sneaky tip? :D