The center square is
made by placing a Color 1 2-1/2" square atop the upper left corner of the Color
2 4-1/2" square, right sides together. Mark the diagonal on the back of the Color 1
small square. Sew on this diagonal. Cut off the excess seam allowance, and press the
remainder towards the center square. Repeat with another small Color 1 square on the
opposite corner, and then with two more small Color 1 squares on the remaining two
corners, pressing the seam allowances of the last two towards the corner triangles...