Step 1:
The paper is light brown / yellow on one side and red on the other side. Prefold in half over both lines.

Step 8:
Open the flaps

Step 6:
Press both flaps downwards.

Step 13:
Fold the edge straight upwards

Step 12:
Fold over the left line first.

Step 11:
Fold over this line.

Step 10:
Fold the tip of both flaps backwards and press the red parts flat, see orange areas.

Step 9:
Press these two spots flat, see arrows.

Step 5:
Make two rabbit-ear folds, use the prefolded lines as guidance.

Step 7:
Fold over these three lines. The shortest line is a mountain-fold.

Step 3:
Fold over these two lines.

Step 2:
Fold over these two lines

Step 4:
Open the model.

Step 14:
Press the edge downwards a little, see arrows.

Step 15:
Fold both edges straight downwards over these two lines.

DONE!    8 or 9 slices are enough for one complete pizza on a plate.
This is a DIY video for making the pizza: