Often a combo of eyebrows painted/drawn on the face part of the head texture (for lower eyebrows) and a color and transmap for the upper eyebrows works. In your image above, the eyebrows are shown using the upper brows - where the actual head texture probably has none. If you paint/draw/paste some on to eyebrow area on the head and use your transmap, you'll get a fuller, more natural effect. Dave