The first stitch is a single herringbone and then filled in the curve with closed herringbone making bigger stitches on the outside curve. I suggest you draw the shape/curve you want onto the fabric. It is quick and easy to do and can be used 'as is' or a
Francesco Del Cossa Triumph of Minerva - detail of the right side, , Palazzo Schifanoia, Ferrara. Read more about the symbolism and interpretation of Triumph of Minerva - detail of the right side by Francesco Del Cossa.