So after a bit of rejigging, remaking and adjusting and going through a lot of fabric (old never used curtains thankfully, I really need to find a reliable cheap source of practice fabric with a bit of stiffness to it) I did manage to make something not to cry about. I'll need to adjust it slightly as the dress form is bigger than me but it's an easy thing to adjust. It's just basted together for now, forgot to take a picture of that, but the general idea is there. It fits better than I expected, might be a bit of a nightmare to sew together with slippy fabric so I'm still expecting tears, but none today, thankfully.
I've discovered I have ordered far too much fabric. Name was kind enough to link a similar camisole pattern for me and the end of roll piece though was a little bit more than indicated on that but I'll probably only need a little more than a third 
I'm now contemplating making it into a dress instead? Also need to contemplate whether I need interfacing in the cups or not, if that's even a thing
I need to go pick up thread anyhow tomorrow so think I'll just buy a small piece, just in case.