I got the sleeves hemmed and I made a collar and edged it with my pretty cotton lace from
Treadle Yard Goods. Hemming and adding lace were both hand sewing projects, so took a bit of time. I've attached the collar with a strip of fabric for a facing/edging along the neckline. It now needs sewing down, also by hand. Then I am moving on to hemming the skirts of the polonaise. The last few things are all rather time-consuming hand sewing bits: sewing down the front facing, buttonholes, buttons, and ties for bustling.
Oh, and then I have to finally hem the underskirt and add a flounce to it. I think I have enough fabric for either one wide flounce or two narrower flounces. One flounce is sounding like less work to me, so it'll probably be that. Hoping to finish this up this week and then get started with the ball gown!