||Start by placing a Color 3 2-1/2" square
right sides together atop the upper left corner of a Color 1 lg.
square, with all edges aligned. (I show them slightly off alignment
here so you can see I am dealing with two pieces of fabric) On the
back of the top square, lightly draw the diagonal and sew ON the
marked line. Cut off the excess seam allowance and press the
remainder towards the outer triangle. Repeat this with another Color
3 square on the opposite corner, then twice more with two
more Color 3 squares on the two remaining corners...