How to feminize lower face?

You are an ideal candidate for an ossous multidimensional genioplasty; beware: not chin implants, neither basic sliding genioplasty, your only technical option is a multidimensional osseous work based on:-slight anterior augmentation or sliding to achieve (you are right, it is a bit weak) better projection-the vertical height of the chin seems okay to me, but I'd say it admits also a slight increase, to be discussed but my first advice is no touch-essential for you: getting rid of the square and masculine look of your chin by means of horizontal reduction to round it upAlso regarding your post: yes, the philtrum is long (distance between nose and upper lip); the treatment is simple and straight forward, a bullhorn lip lift or aka philtrum reduction; it is compatible with the genioplasty in one sitting.Please do open the link below to view one of my cases similar to yours, in a woman with oversized chin seeking, like you, strong feminization.If you wish better grounded opinion well lit, focused and standard images have to be assessed: frontal, both lateral and both oblique views, also from underneath.
Feel free to request any additional information from me.

The combination of jaw angle bony reduction (width) and chin reshaping with a sliding genioplasty for advancement and removing the sharp corners with will both soften your lower jawline and give you more chin projection. This entire jawline reshaping procedure could be combined with a subnasal lip lift to shorten the long upper lip distance.