"The first step to achieve the perfect brow is to decide on a shape. I prefer a thicker brow with a soft defined arch. Remember, the archs highpoint should be at the outer corner of the eyeball and then taper off.
To begin your brow, find yourself a creamy white-eye pencil. Using your pencil, trace under the brow to achieve the shape and arch you want then pluck every hair in the white-penciled area. Next, comb hairs downward and trim any strays..."
To read the rest of his great tips, go to http://modernsalon.com/Blog.aspx?oid=1081260