|Pinned in place, just to see how it might look|
Meanwhile, I ordered the taffeta for the skirt and jacket lining. My inspiration piece is this costume from Marie Antoinette:
I made a guess on the color - no time for swatching, and though I doubt it will match, maybe it will be close. (The blue in my photo is bluer than the velveteen appears in real life; and I suspect the color of the taffeta in the store's photo is not all that indicative either).