This pattern is worked from side to side and is intended to be seamless. When you cast on, you are starting at what would be the left side seam. You work towards the center of the body, split for the neck, and continue the front and back separately. The back stitches get put onto a holder at one point, picked up and worked some more, put back onto a holder, and finally picked up and completed. From there you continue to the right sleeve (using Kitchener Stitch to work the side seam), and then finally the left side seam and left sleeve.

Either side of this sweater can be used as the “outside”, or it can be made reversible (as I did) by sewing flat buttons on both sides of the button band.