At last, all 3 Frankenbras are done! They needed a few finishing touches, such as some seam tape. I did 2 in beige and 1 in black. I was able to wear the black one with the prosthesis in it today.
It’s surprisingly comfortable (it looks sort of like a big gelatinous yarmulke) and, with a shirt on, looks very natural and I look symmetrical. That makes me feel much less self-conscious.