Step 3: Simply cast off - at the right tension - knitwise. So the art of this neckline is all about the at the right tension. Too loose and it will roll. Too tight and it will be inelastic and pull the whole neckline in making it smaller. You might need to do part of the neckline more tightly than another - for example the back of the neck slightly tighter than the scoop of the front. You may need to experiment!