I did my first ever patch today!
It's hard to tell from the angle, but it's the crotch of a pair of yoga pants that my partner hand-me-down'd to me. I sit cross-legged a lot (criss-cross apple-sauce!), so I tear a lot of pants there.
I used "back-stitching" for this, where you stitch forward 2, then back 1, and repeat. This makes the seam *very* strong, I've found.
Sunbeam City is a anticapitalist, antifascist solarpunk instance that is run collectively.