Hi Jenny,
You only posted a small photo, so it's hard to tell. But you look unmistakably like a woman to me.
Still, FFS is about changing a few subtle gender cues, and I think I can see a couple of the most common ones trans women struggle with in that picture, even if they are subtle: there's a bit of a brow ridge and your chin is a bit squarish. So I would guess that you would look prettier with FFS. I think it's really based on how you feel about seeing your face in the mirror.
To answer your questions, Yes, you would probably get some benefit, and no, I don't think you need it. If you are happy with how you look as it is, I don't see how the risk is worth it. What makes me really think I want it is that sometimes when I look at my face in the mirror, my heart just sinks, not because I'm not stunningly beautifull (I can deal with that) but because I see a man, not a woman.