This is what Dr Mayer has to say. Which is a good point and why I am hesitate to do much to my jaw. So many beautiful women with strong jaws.
Chin and Jaw Reduction / Re-contouring
Many transitioning girls think a small jawline and small chin will change their life and give them the exact feminine look that they are seeking – almost to the point of being obsessive about it. In reality, many female media personalities have strong jaw lines and chins, such as Sandra Bullock, Savannah Guthrie, or Angelina Jolie. Very often reducing the size of the jawline and the chin will actually throw the entire face out of balance making the upper half of the face look too large for the lower face.
Dr. Mayer takes all features into consideration when balancing features to make sure that changing one thing does not throw something else out of balance. When chin/jawline contouring is appropriate, the procedure involves making a small incision underneath the chin in the crease to gain access to the area, and then grinding down the bone to reshape the chin/jawline into a more female shape. Sometimes a chin implant is used in combination with the re-contouring to further shape the chin.
Chin contouring can include reducing height, width, and length from the chin. This procedure, to shave the chin, has a much lower potential of complications/risks than the sliding genioplasty.