1-Draw a simple star.Erase insides.
2-Find the center.Mark it with a dot.
3-Draw a line from the dot to the top.
4-Connect each point with a line to the dot.
5-Connect inner points to center (indicated by arrow).
6-It should look like the star above.
7-Fill in every-other section dark.
8-Fill in the rest with a light shade.
