How to create realistic fur

How to layer fur with Pyrography / woodburning.
This is one way that I create realistic fur, with Pyrography / woodburning.
What I’m doing is laying down a base layer of burn straight on top of the wood.
The base layer consists of one uniform burn, if you think of it as painting a wall, you would put a base coat on first.
What I do from there is add more layers into the darker areas, as you can see at the side of the head where to ear is.
I don’t put any details in at this point, I keep working on what is called the tonal values.
Tonal values are the light tones (muzzle) the dark tones (under the ears) and the mid tones. (The bits in between)
Concentrating on the tonal values will give you a more realistic look rather than lots of details.
I do add details towards the end, because you don’t need too much detail.