Brave model! You have made the swirls over her body match the swirls of her hair style which I like. The green of her breasts seems to match the green of the trees. I would like the shot to be closer to the model and from a lower angle so there is less road behind her. It is a liberal interpretation of "portrait".
Is this a portrait? Hum, I guess the word has a wide definition. I suppose this fits. I like body painting as an art form and I think this is a good example of that. I am curious about sharpness of the shot from foreground to background. I am not sure this meets the challenge, but it certainly holds my attention.
Interesting body painting. Is that New York City? If it is, the old adage "Only in New York" still applies. Only thing though, I would have cropped out the shadow on bottom left of the photo.
Where did you find somebody that would paint themselves up and just walk around in the middle of the street like that?! I think straitening it would help a little, and there is a bit much sky compared to the amount of foot in the bottom of the photo in my opinion.