Thanks for your comments on the Cosmo Bag!
Alas, a new needle has not solved the swishy sound my machine now makes with each stitch. Best guess is the metal shank thingie that moves the needle up and down is gently brushing against something else inside there out of sight. It's not interfering with performance (yet), but it's like an ill-fitting sneaker: you can go for a run but might come home with a blister. Further investigation will be left to the repair guy.
In the meantime, since it's now the weekend and the machine is still sewing okay, I probably won't be able to resist a few more seams before I take it in on Monday. And since the next 'palooza block will go live on Monday morning, I might even do that first thing. We'll see how any further weekend sewing goes.
Marie-Christine, something in your comment on shrinking curves led me to think about (next time) using some kind of light-weight, maybe wash-out, fusible strip to hold the edges of the clipped and turned-back curves in place. Having shrunk the pattern, I was working both with a narrower seam allowance (3/8" instead of 1/2") and a tighter curve, which I clipped generously. All those little clipped seam allowance bits did not stay pressed back, and wrestling with two facing layers of that and the curve was more work that it should have been. A strip of some kind of adhesive that would not interfere with sewing would have helped a lot.
Any ideas, readers? I haven't used that kind of product before, but I know they exist. It would have to be something narrow, that would follow a curve without puckering. I could even pick some up when I take my machine in on Monday.
Meanwhile, I'm previewing February's project, the "Reversible Everyday Shopper," and already thinking about how I'm going to change/resize that one.