Smokestack Lightning: easy blues guitar tutorial

Hubert Sumlin's signature riff, picked using thumb and fingers. Check out this video of him demonstrating it himself:    • Hubert Sumlin Teaches "Smokestack Lightning"   And here is the tab of my version: https://perch-onion-e98d.squarespace.... This is a casual video shot on my phone out in the carport, so please excuse the ambient sounds!