1. Start with coloured side up. Fold paper in half.
2. Fold edges to centre line.
3. Fold outwards along creases shown.
4. Turn model over, and fold edges into centre line, crease and unfold.
5. Bring bottom corner up to the third crease. Flatten.
6. Fold corner under.
7. Fold up and tuck under.
8. Fold up and tuck under.
9. Rotate model then repeat 5-8 on other end of model.
10. Pull sides out.
Finished Rectangle Box.You can also make slightly larger box for a lid.