Watch the Low Down D online guitar lesson by TrueFire from Play Acoustic Guitar 6: Lick Lexicon
Low Down D - Lick #35 is a video guitar lesson presented by Joe Dalton and is sourced from 50 Acoustic Blues Licks You MUST Know.
I keep my pinky on the 2nd string third fret for the entire lick. Low Down D sounds minor because I use the F natural and the C natural which are the flatted third and flatted seventh, but I don't use the F# or major 3rd. Try putting a ¼ step bend on the F natural to change the flavor just a little.