I like the warm brown in this portrait, as weel as the same tonality in many other Pics of yours.
I tried, as you suggested me, a Fuji film to warm the colours of my images, but if I obtain a good result on brown or black faces, the effect is terribible on cold colours (like green and blu). What about the film you used here? Sorry about so many detailed questions, but this is my esperimentation-time with film.
Regards this shot, I find just a shame the shadows under the eyes of the two cousins, but I suppose you took this Pic spontaneatly, didn't you? Moreover I love this mix of colours, culture and races and I'm always more courios about your country.