Only the front of the square piece of paper is coloured.
Step 1:This is the front of the paper. Turn the paper.
Step 2:
Make mountain- and valley-folds over these 4 lines.
Unfold each fold after you've made one.
Step 3:
Make these folds from the edge of the paper to the center, not any
further. First, make a valley-fold over the 2 lines below, on the
right. Then, make a mountain-fold over the 2 lines in the middle.
And make a valley-fold over the 2 lines on top, on the left.
Now you get a basic-shape.
Step 4:
Pull the end indicated by the arrow upwards by making a
valley-fold over the orange line.
Step 5:
Hold the piece between 2 fingers, see the small arrows, and
press it flat from above with your other hand.
Remove your fingers to press it completely flat.
Step 6:
Repeat step 5 on the other 3 ends, see the yellow arrows.
Step 7:
Make a valley-fold over these 2 lines.
Step 8:
Unfold the folds you've made in step 7.
Step 9:
Pull the edge indicated by the yellow arrow downwards
by making a valley-fold over the orange line.
Step 10:
Press the edges that stand upwards completely flat from above,
see the yellow arrows.
Step 11:
Fold the loose triangular piece upwards by making a valley-fold
over the orange line.
Step 12:
Repeat step 7 to 11 on the other 3 same pieces of the model.
Step 13:
Open the model by pulling the 2 petals indicated by the yellow
arrows outwards.
Step 14:
Push the triangular piece indicated by the yellow arrow to the
inside of the model by making a mountain-fold over the
orange line.
Step 15:
Close the model by pushing the 2 petals indicated by the
yellow arrows towards each other.
Step 16:
Here the model has the same shape as it had in step 13, but now
the triangular piece is folded to the inside of the model.
Repeat step 13 to 15 on the 3 other same pieces of the model.
Then, fold the piece on the right of the orange line to the left
by making a valley-fold over this orange line (=bookfold)
Step 17:
Fold the petal above the orange line downwards by making
a valley-fold over this orange line.
Step 18:
Fold 2 layers of the model on the left of the orange line to the
right by making a valley-fold over this line.
