I have a bubble butt (in shape, not size, it's still round/perky and I'm only 25), a small waist, skinny wrists, I cannot put on muscle from working out, I've always had a heart-shaped face kinda like yours. In fact, I look frighteningly a lot like you!!! My skin is pretty clear, not terribly thick (my nose is the oiliest part and is much larger than I'd like). Testosterone didn't really add a lot of bone to my face, just a bit that I could have reduced and shaped with FFS.
I come in on the "thin" side I guess. But I've developed such a masculine persona, that nobody would even question that I'm 100% hetero (I would describe myself as bi, with my preference depending on whether I'm in female or male mode).
I would also add that my entire crotch/abdominal/pubic area is very sensual/supple/smooth.
My least femenine attributes: a thick/uniform beard that actually looks good, receding hairline, thick arm and leg hair (but little chest/butt/back hair).
I'm currently in the long process of coming to terms with my gender identity, so I haven't started HRT. But I anticipate looking very lady-like in 2 years with big B cups if I do it.
P.S. You look great and have very female-range features. If this is early in transition photo, you're gonna be indistinguishable from a GG.