The reason her nose is high -- whether it works or not is a different issue -- is because that's how it is in the concept art. Not that my sculpt sticks 100% to the concept, but that was my thinking.
Thanks Rex! They're not 100%, but really, the tires in the concept are sooooo loose, I'd be modelling just the treads for a week trying to get it as random as that :D haha.