Base for Modular Origami

In this instructable, i'm  gonna show you how to make the base for lots of modular origami.

start with a piece of origami paper.
Fold in half horizontal.
Fold in half again.

Fold the upper left corner and the lower right corner to meet the upper and bottom creases.
Fold along the creases to meet in the centre.
Fold the left corner up and the right corner down.
Tuck the corners into the pockets.

fold the flaps back
Assembly: look at the pictures.

A few models you can make using this piece.