All you will need is some square paper, your hands, and some determination.
If there are any spots that aren't clear, please comment so that I may make it more understandable.
The pictures below will be some of the things you will learn how to fold.
Step 1: How to Make Square Paper
First, take your sheet of paper, and fold the top edge to either the left edge or the right edge. Then, you fold the bottom edge over the edge you folded down. You can then cut along that crease, or crease firmly and tear it off if scissors are unavailable.