|I guess this is what it's like to do my best.|
I paused a bit and dug into my knitting with the spare needle and found the stripey part, but somehow I had knit right over it, covering it up and ruining the effect. Usually at this point I'd just shrug and keep going, but I had already prided myself on how I hadn't even made any mistakes yet (that I noticed...) and has shown such improvement.
Anyway, I yanked out a few rows and kept my place and re-threaded the thing on my needle and realized that I was forgetting to pull the yard forward and back before slip stitching, and it resulted in me covering up my hard work. But I undid my mistake! And I figured it out! And I fixed it!
This isn't typical for me. And now I'm even further than before.