Sew these Unit #7 pieces to opposite sides of the corresponding pinwheel (Unit 1). Make 18.
For the remaining 36 flying geese, sew a Unit 4 to both short sides of 36 of the flying geese from Clue #1. You will sew these in sets of 2 (2 per color/block).
Sew Unit 3 to the bottom of the above sections. Make 36.
Attach to the top and bottom of the pinwheel unit to complete Block 1.