As a guitar student, I consider Ronnie Earl to be one of the greatest slow blues masters alive today. Unfortunately, there are very few Youtube videos of his slow blues playing, but he does have some audio recordings. So I've watched and listened to everything I could find for a few years now, and I've harvested some of his licks and tricks. This is just a small sample of his style - poorly played by me - but maybe it will give you some ideas.
![](https://i.ytimg.com/vi/GLuOpOKMPrE/maxresdefault.jpg)