First, measure the size of the neck, take out 12 stitches as a sample, and measure how many stitches an inch is, so that you can figure out how many stitches you need to sew. Use you (number of stitches -8 stitches) /3 to calculate the number of stitches before and after. The rest is divided into two, that is, the number of needles on both shoulders. Add one stitch every other row, and eight stitches should be evenly in the middle of these four copies, 2+ front piece +2+ shoulder +2+ shoulder. Every time you add a needle, you should add a needle at about 2!