Step 1:
This paper with denim texture is about 22x22 centimeters.
Prefold and cut in three parts of the same size.

Step 8:
This is the other side of the model.
Fold over these two lines.

Step 6:
Fold over this line.

Step 11:
Fold the corners inwards (Make the same folds on the backside)

Step 10:
Glue the edges together

Step 9:
Press flat.

Step 5:
You can decide here which length the pants should be.

Step 7:
Fold around the upper edge.

Step 3:
Prefold in half, then prefold over the other two lines

Step 2:
Glue together

Step 4:
Fold over these four lines, use the diagonal prefolded lines as guidance.

Step 12:
Use glue on the place indicated by the small arrow.
And wrinkle the model a little.

Picture: Origami jeans and mini skirt for fashion dolls

Done!
This is a video tutorial for making the paper pants: