How would I create my own bra pattern?

I understand that lingerie creation is actually one of the most complicated aspects of fashion design, due to the curviness of the body and necessity of precise (even where difficult!) measurements. However, I am still wanting to try my hand at this…

Where would you suggest I start, though? I am a crafty person, but have never actually made my own clothing before. I realize this isn’t necessarily the best place to start, but I am a transgender who just started on hormones a while back… And this is a necessity.