So, ummmm... I'm feeling very proud of myself having finished the back, but also a little bewildered. So I have all of these live stitches to save for later, that's cool, but what about the ball of yarn? Do I just cut it off leaving a long tail? But then what would I do with the tail later? Do I leave the ball attached for later? 'Cause then when I go to work on the hood I'll have a couple of balls attached. Bail me out, I'm new at this.