Jim thats not JG11 nose art,
The Greenheart shows what Geschwader. The nose Art shows 2nd Gruppe. Some Staffels had their own art as well early in the war. So pilots had individaul personal art.
FYI
The greenheart = Grünherz Geschwader, the nose art is for II./JG 54 (2nd Gruppe). The horizontal bar behind the cross also means its a 2nd gruppe aircraft. The fact that it and the number 2 are painted yellow (gelbe) means it was in the 3rd staffel (3./JG 54).
So Geshwader = JG54
Gruppe = 2
Staffel = 3
Plane = 2
Just write it as 3./JG 54.
Another example of Art
The image (4./JG 53) above starting from left to right:
Staffel Emblem,
the Gruppen Emblem,
Geschwader Emblem