This is a winged triangular shawlette with a garter stitch border that is knit from center back to the bottom edge. Yarn overs at each end and along the center stitch are used to form the triangle shape. Increases are worked on both right and wrong sides.
1) Stitch count after chart A should be 253 stitches.
2) Chart B, row 19: The first stitch after the pattern repeat on the side of the chart before the center stitch should be k1, not k2tog.