Carrowkeel pattern by Kate Gagnon Osborn. 14/21. The body and sleeves of Carrowkeel are worked flat in pieces from the bottom up. Compound raglan decreases shape the yoke, and short rows at the top of the sleeves help shape the neck. After completing the pieces, the sweater is seamed together using mattress stitch, and stitches are picked up to work the turtleneck in the round.