I also cut out, assembled, and even hemmed the overskirt, and all the bustling tapes have been sewn into place. Both the overskirt and underskirt just need all the pleats added, and hopefully velvet ribbon trim on top of the pleats.
I've been having a hard time finding the right velvet ribbon trim, but I ordered more in a different shade from Amazon, and it arrived today, so I will be able to find out if that will work.
So yeah, pretty much this week will just be spent pleating forever. I might cheat and use my ruffler foot, to be honest.