Go to a salon... If not just google the difference... Google feminine eyebrow arch for a good idea. Remember, womens eyebrows start higher above the eye, so if you're going to thin them yourself, make sure you start at the bottom. Tweezing them yourself wont take too terribly long as long as you can pull many out at once.
Just remember you have to check then everyday. You don't want them getting out of control again. If you're going to get them waxed, please go to a professional. There's a lot that can go wrong by waxing, and a professional will get it right the first time.