Hi Natalie
Since I'm just back from the final finishing touches to my own FFS, I'll stick my neck out and say something a little different to the others. First I agree with whoever said you should give yourself 2 to 3 years of HRT before even considering FFS. For someone your age, it can make a huge difference in terms of filling our and softening the face.
However, no amount of HRT will change your bone structure and looking at your photos (which are not too clear BTW), I see two areas where you could potentially benefit from some help: reduction of height between your upper lip and your nose, chin height reduction and recontouring.
Regarding the latter procedure, a word of warning, it is by far the riskiest of th "standard" FFS procedures requiring a very long time to recover full nerve sensation (1 to 2 years) and often leading to permanent loss of sensation. I had almost 1cm of bone removed 15 months ago and have still not recovered normal sensation but happily, it is coming back little by little.
Wishing you all the best
Donna