Straighten out the yarn in a bunch

Tie one end of the bunch to a chair and the other end to a chair opposite

Start tying knots at an inch separation

Tye the knots all the way long

Try making them equal distance

Once you got the whole bunch tyed proceed cutting it in the middle between each knot

Cut each one separately

You can use different color wool

Repeat the same process

You can cut out the left over string

The more colors you use the better