When designing this dress in my head I knew I wouldn’t be content to just let it be plain and unadorned– there would have to be some detailing somewhere. Review of fashion plates and images of antique gowns indicated that elaborate detailing around the hem was more prevalent during the 1815-1820 period, which was a little later than I was going for (waistlines were also starting to get lower, which did not fit my main dress pattern), but I figured it was close enough. I looked around for some ideas for trimming, and came across this fantastic page explaining how to hand-sew various types of pleated and gathered trim.
The trims on the page probably aren’t quite period-accurate, but since I knew that similar trim was used pre-Regency in the 1700s, and since fancy trims of all kinds were popular during the later Regency period, I felt safe using it on my dress.