This is the center of my paint chip challenge quilt. This piece measures 10" square (finished). I put 4 of the pinwheel blocks together--each block is 5" square (finished). This block placement results in a secondary design in the centre of the four blocks with the green and beige pieces reversed.
Some of my points don't quite match so I am thinking about putting a button in the center of each pinwheel.
The next step will be to add a narrow brick red border.