@Sierra Belle - I think your facial features are already delicate. You should do great.
@Jenna B. - It's hard for me to tell. You aren't trying to look feminine in those pics. I can't judge all your facial structure very well either since you only have front view profile pictures. A side view profile is needed if you want an opinion on whether you'll want FFS or not (specifically brow contouring). You do have a great smile and very nice eyes. I think with the right makeup your eyes would pop very well.
Your somewhat receded hairline and widow's peak could pose a problem (I have a similar hairline and use a wig to hide it). You may want to consider shopping for a wig that frames your face well (de-emphasizes your square jaw line), at least until you can grow your hair out. It looks thick enough that you could part it in a way to hide the receded sides when it's long enough. Maybe sometime down the road you can consider whether to get a hairline advancement or transplant.
There is some toning down you need to do. HRT will probably help in that regard, but you might want to think about changing your exercise routine to one that is geared towards feminizing your body. I can't link anything but I'm sure if you google around you will find several exercise regimens for this purpose. I'm currently doing some I found on Renee Reyes' site and like them pretty well (in addition to a lot of cardio). Specifically I like the pullovers she suggests. It really works on tightening up under your chin, which might help you some in feminizing the jawline area.
All that said, I think you might be surprised at how good you can look right now with the right makeup, attire, and wig. As for the long run, I don't think you'll have many problems feminizing your face.
