Let's see....Are those stitches at the back of the neck, to be later knit on for a neck edge? Cut the yarn if the back is complete, leaving enough of a tail to sew a shoulder seam, or to do anything else you might want to do from this point.
Congratulations on working on your first sweater!!
KnittingHelp Queen Bee
It is not because things are so difficult that we do not dare; it is because we do not dare that they are difficult.