And now we come to the finished product! I'm very pleased with how it came out. The right strap is a little droopy because the arm needs to be adjusted a little but not a big deal. I plan on making a few more variations with the fixed strap, maybe some pleats, maybe less billowy.
And this is how I dressed it up for going out on the town. Now it's just time to start going through the weird yardages of polyester I have and destash a little by making a few more of these.