Next place a small Color 1 square atop a Color
5 3-1/2" square, right sides together, and edges lined up with one corner of
the Color 5 square. On the back of the top small square lightly draw the diagonal, and sew
ON this marked line. Cut off the excess seam allowance, and press the remainder
towards the darker fabric. Make two units like this for Colors 1, 2, 3 and 4...