Watch the Minor 12 Bar Variation 1 online guitar lesson by Corey Congilio from Rhythm Factory: Texas Blues
Here we use examples from the minor group. Take the groove Saddest Of All and play it over the I and IV chords. I make use of the example Rake Is Dirty for the turnaround. As with all of these Texas blues style examples - pay attention to the raking and muting. Make it sound authentic!