So I didn’t get that much done, but something is better than nothing.
I put it on inside out, held my bra cups inside out and marked the placement. I didn’t pin it because I didn’t want to poke or scratch myself when I was taking it off.
And I hand sewed them in place.
The cups may not look pretty but I cut them out a cheap bra I only wore a handful of times. Besides they won’t be visible when I am wearing it, and it will probably get discolored in the pool anyway.