1. Use a pencil to mark a diagonal line on wrong side of each 3-1⁄2" square. (To prevent fabric from stretching as you draw lines, place 220-grit sandpaper under each square.)
2. For one Flying Geese block you will need two matching 3-1⁄2" squares and one contrasting print 3-1⁄2×6-1⁄2" rectangle.
3. Align a marked square with one end of 3-1⁄2×6-1⁄2" rectangle (Block Assembly Diagram; note direction of drawn line). Sew on drawn line, then trim excess, leaving a 1⁄4" seam allowance. Press open attached triangle, pressing seam toward triangle.
4. In same manner, add matching marked square to opposite end of rectangle (Block Assembly Diagram; again note direction of drawn line). Stitch, trim, and press as before to make a Flying Geese block. The block should be 6-1⁄2×3-1⁄2" including seam allowances.
5. Repeat steps 2–4 to make 100 Flying Geese blocks total.