Step 1:This is the front of the paper,
the backside is completely white.
Turn the paper.
Step 2:
Prefold over this line.
Step 3:
Make a valley-fold over these 2 lines.
Step 4:
Fold the model in half over this line.
Step 5:
Prefold the model over this line.
Step 6:
Prefold the model over these 2 lines (fold the edge on the
left and right to the center line)
Step 7:
And prefold the model over these 2 lines (fold the edge on the
left anf right to the folding lines of step 6).
Then, turn the model.
Step 8:
Make a mountain-fold over these 2 lines.
Let the piece above and the piece below these 2 lines point
straight downwards.
Step 9:
Now you've made a sort of tube which is open below.
Make a mountain-fold over the line at the left and a valley-fold
over the line at the right. The line at the left is on the same
place as the folding line in step 5.
Make the same folds on the other side of the model.
Step 10:
Repeat step 9 at the places indicated bij the 2 arrows.
The upper ends of these folding lines are on the same
places as the folding lines of step 6
Step 11:
And repeat step 9 over the 2 sets of lines at the left and right.
The upper ends of these lines are on the same place as the
folding lines of step 7.
Make sure that the 2 ends of the rainbow point straight
downwards (see arrows)
Sunny origami rainbow picture
