Each face is unique.  Study the shape of your face and only contour areas that you want to recede.  For example, if you have a smaller forehead or very defined cheeks, you might want to skip contouring those areas.  But if you feel like you want to slim your nose or give your jawline more definition, you’ll want to add contour there.   Each person will want to contour different areas of their face.  This is a general guide of the most common areas on most people.