Watch the Hand Curler online guitar lesson by Brad Carlton from Chord Studies: Flamenco Chords Vol. 1
The E11b9 chord here is voiced (low to high): 1 - b2 (or b9) - 5 - 7. This voicing really has a great sound. Your third finger will act as a pivot finger here as you move up to your E chord. When you play the E chord, maintain the 1/2 barre even though you don't need the G note - it'll add some extra security to your posture for the chord changes.