I had mine waxed once, just so I could see what my brows *should* look like when done well. After that, I just plucked what stray hairs I saw and tried to maintain the shape somewhat. I still experiment with plucking and trimming, and sometimes the results are good, other times not. Since I don't pluck a lot of hairs, I don't worry much about them not growing back.
For cosmetics, I don't use a brow pencil, because I find that it makes my brows look fake. I use powder instead. I use the Jane Iredale Itty Bitty Brow Kit (silly name, I know) for brunettes. I have found it to be a nice color for my brows. (My brows are actually black, but they look best when filled in with a color that is a bit lighter.) I read somewhere that the best color for brunettes is kind of an ashen brown, not too warm. That describes the color in this brow kit. If I need a more dramatic look, I use Jane Iredale's Dark Espresso eyeshadow, which is darker but still on the cooler end of the spectrum.
I use an angled eyeliner brush to very lightly apply the powder first of all on my arch (I had a makeup artist tell me once to start at the arch, because it can be darker than the rest of the brow without looking weird). Then I move out from there, doing the outline of the top and bottom of the brow first, then filling in. When I get near the nose, I go very lightly, fading off to nothing. Most makeup artists recommend using a very light hand on the inner edge of the brow. I finish by brushing the brow with a spoolie, which helps even out the powder.
This tutorial may be of interest to you: http://www.lisaeldridge.com/vi.....-8yGTvWqYc