Most Helpful Girl
Brown eyes will stand out with these colors: gold, purple, blue, and other browns. I have brown eyes as well, and they are my absolute favorite feature on my face.
The way I like to play them up is by applying a light brown (almost golden) shadow on my entire lid, and then a darker brown (still very natural) on the outer corners. I put a thin black liquid liner on the top lid, white eyeliner on the inner corners of my eyes (if you skip all other steps, at least do this one because it makes a HUGE difference!!), and then black mascara.
Another way to play up your eyes is to look at their shape. So if you aren't an eyeshadow girl, and don't want to add any color just: look at your eye shape and the styles of eyeliner that look best on you.
For example: My eyes are very slightly slanted downward, so I apply a thin dark line on the outside corners only, it gives them a super nice almond shape.
Hope I helped!! Makeup is kind of my passion (: