Those eyes are pretty good! Since it appears we're naming our favorites, I'd say for me it's either 2 or 5. I think you really nailed the volumes and angle on 5.
I think 1st and 3rd turned out the best. 4th would be great too, except for how the teeth read. I really like how teeth turned out on the 3rd one. It's just a few brush strokes, but they have so much volume!
That's an awesome fast drawing. Very well done. I think you did the lips very well and the hair volume reads perfect even with the wide brush strokes. I feel like the nose feels a bit off. Maybe it's how far down the wings go? Would be easier to tell if you attached the reference.
Yay! Ba Sing Se! One of my favorite shows ever! You got extra points just for picking it. As for perspective, I get the uneasy feeling that the main road going to the central arch is slightly off... Maybe it's just the connection point with the entrance itself.