Step 1:
Prefold a square shaped paper in half and cut along the prefolded line. Tape or glue both pieces together and you'll get the same paper as in the picture.

Prefold in half and fold both edges to the prefolded centerline.

Step 8:
Fold all other edges to the left.

Step 6:
Now the model looks like this.

Step 11:
Tape / glue both ends together.

Step 10:
Repeat step 9 a few more times to get the model in a quarter circle

Step 9:
Press the edge on a table, see pink dots, and pull the rest of the model to the right, see arrow.
Then press the edge flat on the places where it has gone upwards.

Step 5:
Make zig zag folds over the prefolded lines

Step 7:
Fold this edge to the left and press it flat.

Step 3:
Fold the edges to the centerline.

Step 2:
Fold the edges to the centerline.

Step 4:
Fold to the centerline one more time and unfold the model

Done!

Real plisse skirts are made by wetting the fabric and letting the fabric (with pleats) dry under high pressure or a weight. 

This paper plisse skirt doesn't need all this, paper is great for making sharp and long lasting folds / pleats.

Picture:  Fashion doll wearing an Origami plisse skirt (design: Joost Langeveld)