Some of the readings I did went again through the materials used for thatching and different techniques dependent on the materials we have. I think some of these methods could be combined to experiment both with layers of the system (as some are better for water proofing; some are better for wind etc.) which could also help with allowing us to build something larger. Material properties influence the size and shape of the structure, for example, the more porous the material, the more steep the angle of the walls could be.
And this video, is an introduction to thatching