I've been working hard on translating the German corset pattern and it seems pretty simple. Evenmoreso if I buy ready made boning channels. The hard bit is going to be making it fit me.
I'll make it in white cotton coutile with black bias binding, a black pleated ribbon at the bust, black lacing and dragonfly flossing; dragonflies were popular motifs in Art Nouveau and occasionally popped up in Art Deco.
I have had another idea for cosplay which should be fairly simply, if utterly unrecognisable due to Mary Oliphant (revolutionary and Patriot) being from a radio show. Simple lower to middle class 1770s dress, with an apron and hat, I imagine her wearing a sort of rusty reddish orange, but blue would be just as apt. If i feel up to a challenge I could make stays (corset) and try and find the buckled shoes they wore at the time.