I liked how my shoulder puffs? came out, but I wouldn't say it's my favorite way to make them. I was short on time and I also didn't want to make anything complicated for this costume. Ideally I would have like to make them into stiffer round puff sleeves and more accurate.
My approach here was a simple elastic band loop, that fits snugly under the arm. I used excess white fabric from the dress to make these shoulder puffs. I wrapped it around the elastic band and sewed it down loosely.