I just saw this article on Gizmodo, and I thought that this could be helpful, especially for the back of the suit;
http://io9.com/5544739/design-secrets-of-iron-man-2-suitcase-armor-whiplash-and-crazy-improv
http://io9.com/5544739/design-secrets-of-iron-man-2-suitcase-armor-whiplash-and-crazy-improv