Gather a sheet of paper
Place the paper flat on a surface
Fold the paper lengthwise into a long strip
Press the fold firmly
Fold the strip lengthwise again if you want a thicker blade
Unfold slightly and shape one end into a pointed tip
Fold the sides inward to sharpen the blade shape
Crease all folds firmly
Roll or fold another sheet of paper into a tight tube for the handle
Insert one end of the blade into the handle tube
Secure the joint by folding or tucking the paper
Wrap a small strip of paper around the base for a guard
Press all parts firmly to hold the shape
Adjust the blade and handle until the sword looks balanced