You are going to need:
4 strings
A clipboard or some celotape(you will need it to keep your thread sti
ll)
Scissors
1: Get 4 different colours of strings. 

2: Tie them into a knot.
3: Get 1 string and pass it unther the other 3 strings.
4: Then make a shape of 4
5: Put your hand inside the 4 and take the string you used to make the 4 and bring it in.
6. Pull very tight.
7: Repeat this step until you have your regural size bracelet.
Here's a video which is very helpful:
And here's a photo of what I did. Really I didn't understand it very much so it looks horribly bad! So I suppose this is what you should not do: