Step 1:
I wrapped tin foil around a white paper of
about 8x8 inches or 20x20cm.
Turn the paper.

Done!

Step 8:
Turn the model.

Step 6:
Press the spot indicated by the large arrow
flat and finish the valley-fold of step 5.

Step 13:
Mountain-fold over this line.

Step 12:
Mountain-fold over this line.

Step 11:
Press the layers between the arrows against
each other, then hold the model the same
as I do in the next step.

Step 10:
Make an inside reverse fold over these 3 lines.

Step 9:
Prefold over these 2 lines.

Step 5:
Valley-fold over this line. The corner
indicated by the pink arrow is pulled upwards
while you do this.

Step 7:
Repeat step 5 and 6 on the other side.

Step 3:
Valley-fold over these 2 lines.

Step 2:
Mountain-fold over this line.

Step 4:
Valley-fold over the line on the left and
mountain-fold over the line on the right.

Step 15:
Mountain-fold over this line.

Step 14:
Mountain-fold over these 2 lines.

And this is a DIY-video with me folding the silver spoon: