Open out the paper napkin so that it is double, with the long folded edge nearest you. Pick up the bottom right-hand corner and bring it across the napkin, folding from the centre of the lower edge so that two sides of the folded section are at equal angels. Press in place.
Now bring the bottom left-hand corner up and over the first fold, again folding the centre point. Align the edge of this fold with the edge below it.