This cardigan is worked in pieces from the bottom up then sewn together. The center back is shaped with a gather, shortly before beginning the armhole shaping. The sleeves are worked from the bottom up, and shaped at the top with a gather, shortly before the final bind off. The front bands are worked in attached i-cord, which also forms the button loops.

To read about the design inspiration behind this design: http://www.fionaellisonline.com/parapet.html