Step 1:
These are all papers needed for making the weather vane, each different part is made of another color. The large papers are 6x6 inches and the small paper is 3x3 inches.

Step 6:
Press the edges downwards

Step 5:
Fold over this line.

Step 2:
Prefold.

Step 4:
Prefold the edges to the centerline

Step 3:
Valley-fold over the 2 lines at the bottom right, mountain-fold over the 2 diagonal lines and valley-fold over the 2 lines at the top left.

Step 10:
Repeat step 9 on the other three flaps.

Step 8:
Bookfold one layer to the left, then fold a flap upwards. Do the same on the backside.

Step 9:
Fold this flap downwards.

Step 7:
Repeat steps 4 to 6 on the backside

Step 16:
Fold over this line.

Step 15:
Make four of these sticks.

Step 12:
Start with the folding line below

Step 11:
Use glue or tape to keep the rotor in the right shape.

Step 14:
Use tape or glue.

Step 13:
Now it's easier rolling up the paper

Step 21:
Fold in half

Step 19:
Make two of these tubes.

Step 20:
Fold the small pink paper in half three times.

Step 18:
Use tape or glue.

Step 17:
Roll up into a tube.

Step 22:
Done.......

Step 28:
Fold the corners inwards (make the same folds on the backside)

Step 25:
Done.

Step 26:
Tape / glue two squares together.
Fold over these two lines.

Step 24:
Fold over these two lines

Step 23:
Place 2 or 3 papers on top of each other 

Step 29:
Done too.

Step 27:
Prefold

Step 30:
These are all 10 pieces required for making the weather vane.

Step 31:
Glue a stick into the backside of the rotor.

Step 32:
Glue the small pink piece behind the rotor.

Step 33:
Place a stick against the purple tube. Then glue the blue piece around them.

Step 35:
Glue the vane around the two sticks

Step 34:
Glue two sticks to the purple tube.

Step 36:
Done......

Step 37:
Slide all parts together, see arrows