Your render seems to be somewhat more like the Chani character as portrayed by Sean Young in the film, rather then Barbora Kodetová who portrayed her in the mini-series. In either case, I think that you have captured the almost feline nature of her character, and her fierce loyalty to her people and planet.
Wow, amazing! And your stillsuits... WOW! So much better than what I've seen. Amazing! Also you didn't forget the face mask, many people actually tend to forget it...! Love how it looks like a jet fighter mask, really believable!