5 Repeat steps 3-4 on the reverse face, then open up form below what is the traditional paper hat. Push the two end corners of the hat together, until eventually the model can be flattened into a diamond shape. At the opening the borders folded in steps 3-4 will need to be overlapped.
6 Once you have the diamond shape, fold the lower corner up (single layer only) to a point approximately a third of the way up the height of the hat. Repeat on the reverse side.