The ridged chevron stitch only uses basic crochet stitches like double crochet and double crochet two together ... Multiple of 12 sts plus 3 Row 1: Dc in 4th ch from hook (skipped chains count ...
Row 1: Double crochet (dc) in 3rd ch from hook ... decrease over last 2 stitches, fasten off. Connecting the front and back Sew together at each shoulder seam with right sides together.