Make a Paper Balloon in 8 Easy Steps!

Step 4 Fold the Pyramid to form a Diamond

Fold a side of the pyramid so the corner meet the top. The base of the fold should meet the center fold line of the pyramid. (See figure 4 on torn off piece of the printout.) Sharpen the edge and repeat this on the other side. Now, flip over the pyramid and repeat with the other two corners. You should now have a diamond shape (Square on a corner). Always keep the folded edges down.