Didn't grab me at first, but the more I look at it, the more interesting it becomes. The girl is very interesting & unique (obviously), and I like the contrast with the man. I also like the tilt of her head. It's playful, and draws you to her eyes.
Probably my prefered in this (excellent) challenge: it's a portrait, but dynamic; it's an almost classic pose, but so original too. Unexpected and funny.
I like their attitude too: happy, with something a bit sad beyond...human.
Your cropping is just perfect.
The dichotomy of body paint and body art as well as colored hair and baldness is an excellent study of contradictions. The shadowing/darkness at top left hinders the over all image slightly, but that same natural lighting is perfect for the rest of the male subject's face. Interesting and fun image.