1. With a pencil, lightly Draw a line from each opposing corner and each opposing edge.
It should make 2 Xs.
2. Lightly with a pencil, Beginning in the middle of Xs, draw concentric circles going outward to edges.
3. Outline X lines with black marker.
3. Make a marker dot where each X line intersects a circle.
4. Draw a swooping curved line from dot to dot traveling around each circle. Continue outward.