It can be a little tricky when you've just started, but after a few minutes you'll notice how easy it actually is.
Step 1: How to start
Then, weave the thread as shown in the pictures.
Step 2: Making the scarf
Repeat this for your other fingers.
Now, weave again, so each finger has two threads on it. Then, repeat the last step.
Step 3: And repeat and repeat
Step 4: Finishing the scarf I
Step 5: Finishing the scarf II
Step 6: Wearing the scarf
All that's left to do now is make it a scarf!
The the beginning( or the end) in your hand and wrap in around your arm as shown in the pictures.
Now, knot the beginning and the end together and....