Step 1:
This paper with denim print is about 20x20 centimeters. Prefold in half over both lines.

Step 8:
Fold the part on the right straight upwards (make the same folds on the other side).

Step 6:
Fold both edges downwards.

Step 11:
Fold over these two lines.

Step 10:
Fold the upper edge downwards, use tape or glue.

Step 9:
Fold the edges backwards

Step 5:
Use the prefolded lines as guidance

Step 7:
Use tape or glue to connect the corners below.

Step 3:
Prefold the four edges in three parts of the same size.

Step 2:
Prefold the edges to the centerlines

Step 4:
Fold over the prefolded lines. Then turn the paper

Pictures: Origami Dollhouse by Joost Langeveld

Done! Looks comfortable :)
This is a DIY video for making the dollhouse Origami couch: