There are different mediums you can use to perfect your brow look like pencils, brow powder, brow pens and brow gels. Pencils are good if you already have thick brows and you just need to fill in gaps here and there. If you have a bit thinner brow you may want to try a powder to give them definition and shape. Brow gels are used to hold the brow in place they come in clear or tinted. I'm not too familiar with brow pens, after some research it appears they do the same thing as the pencils you just have to be sure to use extremely light strokes when applying to avoid a harsh look.
Try and avoid drawing a straight line for eyebrows or making an unnaturally high arch if it's not in line with the natural shape of your brow. It's also good to remember that, as a makeup artist stated at a seminar I attended, your brows should be sisters not twins. They shouldn't look identical just similar..here's two of my favorite videos that helped me on my quest for the perfect brow I took a few tips from each video. Hope this helps!
Now for the giveaway details...the items I am giving away are the NYX Eyebrow Kit with Stencils and the NYX Eyebrow Push Up Bra. To enter the giveaway you just have to do is Follow my blog(if you aren't already) and comment under this post. Extra entry if you follow me on Twitter and RT the contest on your page. If you RT please leave your twitter id in your comment as well. So two things to enter follow and comment one extra entry if you retweet on twitter. Contest ends July 15th.