This is a photo I took this morning, and, as you can see, it's turned into a cocoon overnight. It's not complete yet, because it needs to spin more layers inside. There are no more spinning yet, this one seems to be quite early.
I had a bit of a shock this morning. Because the worm had started spinning in the basket, amongst all the other worms, I decided to leave it there and remove the rest. Then this morning I thought I'd remove some of the leaf litter from around the cocoon . . . and found a dead worm. I think it was probably already dead when this worm started spinning, but I was a bit worried that it might be the one which should be inside the cocoon. And I couldn't see the worm inside because it had mostly turned opaque. Fingers crossed!