Watch the All In The Pinky online guitar lesson by Brad Carlton from Chord Studies: Flamenco Chords Vol. 1
Way back in Example 1, we had an E chord and achieved the flamenco sound by adding an F in the middle of the chord. We're doing the same thing here - we've got an E chord using the A form out of the CAGED system and the fourth finger grabs the F note. Again, a good thing to practice first is just getting the pinky movement by trilling back and forth between F and E.