These are the set of 4 sketches I designed for the first assignment. The inspirations came from windy, fluid forms, supported by repetitious structure and oppositional formats. The fourth sketch (bottom right) was a bit of a wild card, which was an attempt to depict random pressure changes in tunnels, also perhaps the waves of viscious layered material of some kind - i.e liquid plastic of some kind - the background represents a cast or block for the design to be bored into.