Step 1: You will need
You will also need some patience.....
Step 2: Getting started
It's worth taking your time and getting it right. There are several ways to section the hair for dread or braid (plait) installs. I am going to show you the most common sectioning pattern (brick layer pattern), it's also very simple.
Starting at the nape of the neck, section off a row from ear to ear, clip the rest of the hair up out of the way, (pic 1).
I like to make my rows aprox 1.5cm, you can of course make them larger or smaller.
Next divide your row into squares (pic 2), I make them 1.5 x 1.5cm. Leave one square loose and clip the rest out of the way.
Divide the hair in your square into two pieces, place your dread between those pieces (pic3). The middle of the dread should be against the scalp between those pieces.
Clip the top section of the dread on top of the head, this keeps it out of the way while you braid the bottom.
Take your two pieces of natural hair and cross them over the dread (pic4), this gives you three sections that you can braid, keep the tension and braid (pic 5), when you reach the end secure with an elastic band (pic 6).
Repeat along the row (you will have aprox 4-6 dreads in this row).