Only the front of the square piece of paper needs to be coloured.
Step 1:Make a mountain-fold over the red line.
Step 2:
The open side is below.
Make a valley-fold over the red line. Make this fold
over both the layers of the model.
Unfold this fold after you made it.
Step 3:
Make a valley-fold over the red line.
Step 4:
Add glue to the piece on the right, see the arrows on
the right. Roll up the model and glue the piece on the
right to the backside of the piece that is indicated with
the 2 arrows on the left.
Step 5:
Push the piece at the arrow to the inside of the model.
It's actually a sort of mountain-fold over the short red
line on the right of the yellow arrow. The red line is the
help-line that you folded in step 2.
Step 6:
Fold the piece at the arrow on the right to the inside too.
This piece lays over the piece at the arrow on the left
after you've done this.
Step 7:
Repeat step 6 a few more times (work counter-clockwise)
until the whole bottom of the box is flat and closed.
Step 8:
Here 3 pieces are folded down.
Step 9:
Here the whole bottom is flat and closed.
Add a bit of glue to the bottom-side of some of the
upper pieces and glue everything together.
To make the bottom of the box really flat just place it
on the table (open side up) and press hard on the inside
of the bottom with a finger.
The box is ready!
