Watch the D Form: Arpeggio online guitar lesson by Dave Celentano from CAGED Commander
This could quite possibly be the least used arpeggio shape in the CAGED system, but it must be learned. The top three notes on the G, B, and high E strings make a great exercise for developing coordination between the ring and pinkie fingers. Try using ring, pinkie, ring finger combination. Begin this arpeggio on the lowest root note, then ascend, descend, and ascend to the original starting root to resolve (see attached tab chart for details).