I’m dampening the paper. You can skip this if you dry-fold it. Keep the bottle far from the paper, so water comes out more smoothly. Do that on both sides. I’m just finding the direction of the fiber! Now, fold in half. Open. Fold in half diagonally, just to the centre line. Repeat on the other side. Pleat fold. Valley-fold, then turn over and open. Valley-fold. Turn over. Valley-fold and squash. Fold the corner inside. Finished.