What you need:
Cut off 1.5cm from the side (Pic.2)
Place the sheet of paper verticaly in front of you and fold in half. (Pic.3-4)
Fold again in half and unfold. (Pic.5) Fold according to picture 6.
Fold next steps carefully.
Cutting out the top is delicate, if you cut to far down, the star will be cut in half!