Geometric Design

So following finishing off my bamboo bridge - obviously without safety railings, I have talked to Carla and James and it has been stated that we need to have a coherent design aesthetic throughout our space. Due to James finishing off his tree house dining platform thing, he has designed the shell with a very geometric structure. In order to create coherency, Carla and I have to alter our designs accordingly. I do not have a lot of time between now and hand in, and due to the fact that I am still not 100% I will try my best to design something but it must be noted that it will not be my best work. 

Below are a couple of images from James' blog showing his tree house design and what I will need to try and design my bridge to follow: