The reality is that you will probably be disappointed if you put all of your hopes for facial changes in the HRT basket; HRT makes subtle changes, which can feminize a face that is not overly masculine, but otherwise most of us need surgery to pass. And it's just not bone removal that creates a female face; a female face is also dependent on proportions, such as distance between. Your upper lip and the base of your nose, the position of your chin as it relates to your lips, nose, and forehead (a sliding genioplasty will bring your chin forward if it is too far back out of female range); as well as other proportions.
Facelifts, fat transfer, and fillers are used for facial rejuvenation, a board certified plastic surgeon can best advise you of what will work best for you.