'Top-down biomimetic process” enables to solve engineering concerns thanks to solutions found in Nature. The motivation of the present work is to exploit the observed “natural” weakness of natural fibers i.e. their hygroscopic behaviour, so it can be used as a driving force in autonomously self-shaping smart materials, Hygromorph Biocomposite (HBC). This kind of actuator could be used for example in autonomous climate adaptive building structures with humidity/temperature interactions. In this work we present the “top-down framework” dedicated to the HBC development based on pine cone inspiration (microstructure and actuation). Then, a series of design guidelines for HBCs with improved performance, low environmental footprints in severe environments is discussed. The actuation response is evaluated as a function of material parameters: The actuation performance is directly related to the fibre microstructure and its biochemical composition also as fibre content and Interfacial Shear Strength. We also provide a demonstration on how HBCs can be used to trigger deployment of more complex structures based on Origami designs.