When you have put stitches on a holder in order to complete one side of the sweater, you need to reattach a strand of yarn to the stitches that are on the holder when you are ready to knit them. Just start knitting with it, and you can weave in the end later.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry