I'm doing a mash-up, here. I've taken an internet-find pattern ( larsdatter.com, 18th century Women's Jackets) for the general bodice shape,
and I'm looking at Janet Arnold's pattern for the 1780-1790 "gown with a front fall opening and a vandyked collar" from Patterns of Fashion 1: 1660-1860. I'm adding cuffs and a front placket which will imitate a buttoned front closure. For the fabric, I'm using mustard velveteen, of which I have about a gazillion yards (literally about 4), and I'm lining it in a creamy linen I found on sale. I think things will go fairly smoothly. I've enlarged my pattern(s) with my trusty enlarger that I received from a teacher friend (it's probably a hot enlarger, let's be honest.) and I've created a mock up. The proportions are a little wonky, but I'm making another mock up later today. I'm planning on hand sewing this, because I always love to super stress myself out at the last minute, but I may machine the innards of my french seams if it gets crazy.