First, cast on stitches for the back piece, which is knitted back and forth with increases for the armholes. Next, cast on stitches for the front pieces, which are knitted separately with increases for the neck before the front pieces are joined. Increase stitches for the armholes before joining the front and back pieces. The work is then knitted in the round to full length. Finally, purl the work and knit the neckline, before crocheting a border around the sleeves for a stable edge. The entire dress is knitted with one strand of each yarn. Half stockinette stitch stretches slightly when worn. Knit the dress slightly shorter than you want it, wash it and block it to the specified measurements to achieve the correct fit.