Seminole Patchwork uses geometric patterns constructed in bands. It’s often used by women in the Seminole tribe for skirts. EGA is offering the pattern for a biscornu inspired by these patterns for its September stitch-along. Instructions and the chart are available as a PDF.
Although the patterns are typical of Seminole Patchwork, the colors are not. More typical are bright colors on black.
Keep in mind that one square on this chart equals one Tent Stitch. The finishing instructions are not complete; you’ll need to find other instructions to finish biscornus.