Two mitten bodies, close enough to matching, are ready for thumbs. This is an interesting process, so I'd like to share it.
First, I must carefully put onto needles the stitches held on the yellow waste yarn and be sure I don't drop a stitch.
Then I remove the yellow yarn.
I then arrange the thumb stitches on short glove needles and start knitting around.
Soon I will have mittens ready for next winter.