Here’s a very subtle but fantastic little trick those who like to wear eyeliner.  I typically use the Bobby Brown gel eyeliner with a brush.  If you put a layer of eyeliner under your eyelash line, where the fleshy part of your skin is, it will help define your eyes a bit better.

It may look a little scary in the video because you have to lift your eyelid a bit to help draw the line.  We always do this to brides— I think it really helps to give your eye a little extra pop for pictures!

C's right eye comparison

C's left eye comparison

Another closeup video: