This ball is based on a C10 division. The picture above was done on a 3 inch base . You will need 3 colors of thread, two shades of one color and a contrasting color. Metallic thread should be used to mark the divisions. Prep a 3 inch ball and mark in gold thread a C10 division. Starting at any one of the pentagons, with the darker of the the color with two shades, go around the pentagon four times, with a stitch at each corner. (You are moving outward.) Repeat with the lighter shade. Repeat with the contrasting color. Here you may need to add a few rows more till you meet the marking thread-the old nudge and fudge!. Do the same on every pentagon on the ball.

When all the pentagons are completed, look at the ball and identify the triangle that occurs at each corner of the pentagon. There is one triangle at every corner of each pentagon and it connects to the corners of two more pentagons as well. Starting with the darker of the color with two shades, and at the corner of a triangle, go OVER the side of one pentagon, taking a stitch at the triangle corner, UNDER the side of the next pentagon, taking a stitch at the next corner of the triangle and Over the next pentagon side taking a  stitch at the corner of the triangle where you started. Reappear for 3 more rows so you have a total of 4 rows of the darker shade. Repeat with the lighter shade for 4 rows and finally the beige for 4 (or more) rows finishing out the triangle.

Do the same for each triangle making sure that if you went OVER the side with the previous triangle that you now go UNDER it etc.