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
"Don't ask yourself what the world needs. Ask yourself what makes you come alive and then go do that. Because what the world needs is people who have come alive." Howard Thurman