Step 1. White side up. Valley crease at 45 degrees.

Step 2. Mountain crease (try no to crease center square).

Step 3. Mountain crease at 45 degrees (flaps do NOT meet at center line).

Step 4. Creasing finished lift four corners,, using creases from steps 1 & 2.

Step 5. In progress.

Step 6. 3-D box-shape. All triangular flaps inside.

Step 7. Top-View. Push small triangular flaps against wall, then large flaps. Tips of large flaps need to be folded a bit.

Step 8. Side-View. Valley down on creases from step 3. May need to flatten box slightly to avoid tearing.

Step 9. Done.