There is hair on our face, most of which we get removed, and some that serves a questionable, but useful purpose.
The Eyebrow. Why do we have them? A rhetorical question, that cannot be answered directly, but I do know that a "bold brow" plays a major role in your face...
A thicker, more defined eyebrow can transform your face, and I didn't put as much focus on my brows, until I really started to see the difference of a thick versus thin brow.
See the difference?
I have a secret crush on Camilla Belle, not only because she is beautiful, but more importantly her eyebrows complement her striking features regardless of her makeup style...
Simplicity: Keep the rest of your look simple by using liquid liner, bronzing your cheeks, and glossing your lips, and finally accenting your brows with a pencil or even an eyeshadow color such as dark brown or black to soften your color, but produce a "thicker" brow...