You start with the napkin in your hands.
Take the side and lay it against the middle.
Do the same thing at the other side.
Like this. Now you need to turn the napkin.
When it is turned, you take the top and turn it down like 1-2 cm from the top.
Turn the napkin around.
Turn the upper corner down against the middle.
Now you need to take the down corner and lift it up so it is parallell with the upper Swift.
Lift the entire downside up, and lay it under the flips on the top.
Now it should look like this!