Made this origami? Leave a comment & submit your photo on the last page here.
Step 9: Unfold the previous step.
Step 10: Fold the right edge over to the left edge.
Step 11: Unfold the previous step.
Step 12: Flip the paper over to the other side.
Step 13: Bring the left and right edges in to the centre whilst also bringing the top edge down.
Step 14: Flatten the paper. This is the water bomb base completed.
Step 15: We will now continue on to make a bird base, skip to step 28 if you already know how. Fold the front flap's right edge diagonally down to align with the central vertical crease.
Step 16: Unfold the previous step.