Sewing: Sleeve setting and Zone of Proximal Development

It's been a rough couple of weeks on the sewing front. While working on what was supposed to be an easy side project, my sewing machine stopped completing zig-zag stitches. We pulled out this old J. C. Penny from my mom-in-law from the closet. It does zig-zag but drops straight stitches using some thread types. This is mixed with what might be the most frustrating challenge of my sewing journey,…