Step 1: What Do You Need?
So, you'll need:
Three different coloured papers
A piece of wire
A necklace (or just string, whatever you prefer/have)
Step 2: Making the Modules
After folding them, all you need to do is one extra fold, a diagonal fold from the bottom left corner to the top right corner.
You'll need to make twelve of these modules.
Step 3: The First Corner
Putting the model together is easiest to follow by looking at the pictures.
Start with putting the corner of the dark green module in the pocket of the light green module. Take the white module and put it's corner in the inner pocket of the dark green module, the inner pocket had been marked on the second picture.
To finish the corner, take the corner of the light green module which, at the moment, is next to the white module, and put it in the corner of the white module.
Step 4: Three Ways
When there is one corner of a module in the pocket of an other module, there is still a pocket empty. You have used two colours, so in the pocket will go the corner of a module with the third colour.
You can also finish corners. As you can see in the third picture, with one extra module you finish a corner. Since you've already used two colours, take the third colour and create a corner just like explained in step 3.
The third option has nothing to do with colours, you just have to count. As you can see in the picture, I've marked the sides with numbers. There will always be four sides. So, when you see three closed sides and one open, you know you need to close this side.
Step 5: Continue
Step 6: The Last Piece
Step 7: Givin' It a Loop
Take your pieces of wire and create some kind of clothes hanger- like shape. You can do it the way you prefer, or follow the pictures.