Step 1: What you need
You have to PRINT it, and cut it.
Note: straight lines ( _ ) are for cutting, but dotted lines (- - -) are for folding
And you also will need:
GLUE (it can be any glue for paper, but you have to be careful with the quantity. I suggest you have a little PAINTBRUSH to distribute the glue properly)
CUTTER (any model, but not rotative)
PLIERS (a little one; you can use an old depilate pliers)