Note: I don't have brown eyes, so I haven't tested any of these looks out, but they are from pictures that have worked or things I have read online. Lets get started!
So, brown eyes have it kind of easy, because you can wear pretty much any color you want. It might not be as easy to make it pop, but its possible!
Just as brown eyeshadows will bring out green eyes beautifully, green eyeshadow or eyeliner will bring out brown eyes! To get the most out of this trick, use a deep, jewel-toned green or an emerald. A gorgeous suggestion is the Buxom Stay-There Eyeshadow in Saint Bernard for eyeshadow, and Urban Decay's 24/7 eyeliner in Covet for eyeliner.
Photos From Sephora
Another trick to make your brown eyes stand out is by using purple eyeshadow or eyeliner. Use one that is more red or pink based instead of blue based. The decision to go for light purple or a deeper shade is completely up to you and what you're comfortable with. For eyeliner, use shade 1999 from Urban Decay's 24/7 eyeliner line, and Urban Decay's "Grifter" eyeshadow all over the lid.
Both Photos From Sephora
By using a gold eyeshadow, you can bring out the lighter undertones in your eye and make your eyes sparkle. Swipe a shade of shimmery gold eyeshadow all over the lid and, if you want, you can create a brown smokey eye with a deep brown shade in your crease. Make sure your crease color has some gold shimmer so that it ties in your whole look.
What do you do to bring out your brown eyes?