Step 1:
The Origami papers are made of a white and a pink paper taped together with transparant wrapping paper.

Step 2:
Prefold in half

Step 6:
Tape / glue both ends together

Step 5:
Valley-fold the upper edge under the edge indicated by the arrows.

Step 4:
Mountain-fold.

Step 3:
Fold over these two lines, the valley-fold is already prefolded.
Then unfold the fold of step 1 and turn the model.

Step 10:
This is how the bottom looks.

Step 8:
Fold/press the edge downwards on this spot.

Step 9:
Fold/press the edge downwards on about five more spots.

Step 7:
Fold the edge inwards, see arrow.
Then turn the model

Step 16:
Press / fold the edge downwards on about six more spots.

Step 15:
Press / fold this spot downwards

Step 12:
Prefold over the blue line, then turn the paper.

Step 11:
One part of the box is done.....

Step 14:
Tape / glue both ends together. Use the white edge of the box as guidance.

Step 13:
Fold the edge to the prefolded line.

Step 17:
Slide the lid around the white edge to close the pencil box.