The “hook” eyebrow is one where the arch begins too close to the beginning of the brow, and it is a common error. After seeing them in several states and even on the most fashionable women, I finally asked a dear friend, who simply said she thought the arch was supposed to start where her eye began. Fortunately for her and many like her, the hook eyebrow is also one of the easiest to fix. Simply connect the beginning of the brow to the peak of the arch and fill in. If the eyebrow is too full, tweeze under the beginning of the brow, then connect and fill in.
Over plucking is another common trend and can look unnatural. It often creates a dated look and remains me personally of eyebrows in the 1930s. To correct this common problem, until brows grow in I like to use an eyebrow pencil or pomade and apply it in short strokes, duplicating the look of brow hairs. Avoid overdrawing brows, as this can look fake. Fill in only where necessary.