Now, to make the larger flying geese units,
place a Color 1 square right sides together atop a Color 3 larger
rectangle, with edges aligned. On the back of the top square
lightly mark the diagonal. Sew ON this diagonal line. Cut off the
excess seam allowance. Press the remainder towards the corner. Repeat
this with another Color 1 square on the other end of the rectangle.
Make four units like this. Make four more small flying geese units
using Color 2 squares and small Color 3 rectangles...