Stack a Color 2 3-1/2" square right sides together atop the left end of a Color 1 3-1/2" x 6-1/2" rectangle. On the back of the square, mark the diagonal. Sew ON this diagonal
line. Cut off the excess seam allowance; press the remainder towards the rectangle. Repeat
this same procedure with a Color 3 3-1/2" square on the other end of the
rectangle. Make two rectangles of this same color arrangement. Make two more in the same
manner using a Color 2 rectangle and two Color 1 squares. Trim these
back to 3-1/2" x 6-1/2" if needed...