Step 1: Making the units
2.Do it again.
3.Open it back up.
4.Make the edges meet at the middle.
5.Fold it in half lengthwise.
6.Fold in half width-wise.
7.Open it back up (not all the way).
8.Make the edges meet in the middle.
9.Fold it back in half width-wise.
11.Make 2 of them.