How to make a closed origami cube

(page 2)

1st picture of closed origami cube

01.

Let's start with a "square base" .

Try to learn how to make a square base from the above link.

2nd picture of closed origami cube

02.

Prepare to apply a vertical valley-fold.

Be sure to make Δ to be greater than zero.

Here you can vary the length of Δ and you can have a various size of cube depending on the size of Δ.