Sissy forever Pre-class
Feminizing the eyebrows can dramatically feminize the face because the eyebrows and eyes are the most expressive area of the body. They provide a frame for your face. The proper shape can provide an instant eye lift, while a poorly shaped brow can darken and obscure the eyes or create a perpetual unwanted expression. Thin, dark and defined eyebrows gives such a girly look. TGirls tend to have thicker eye brows so they need more tweezing.
You can look at pics of models and celebrities to see what brow shapes they have that you love. Be sure to compare them to your face shape and hair color as well, since eyebrows are part of the entire face and need to work in concert with other features, including the nose, lips, cheekbones, and hairline.