On request, I recorded this one so you can see how I did the extra fluffy hair!
The basic principle is start with a blob done using only a large, soft round brush (the most basic kind). On top of that you then add a little bit of textured flyaway using actual hair and detail brushes.
There's lots of hacky stuff in there. You can download the video here:
https://drive.google.com/file/d/1zrTk5nq_Mh-4qtLFixHxHgV5Kwv7eaiQ/view?usp=sharing