Even though it's likely to complicate construction, I want to use a verity of siding materials and roof heights. This will break up the space and make it more visually interesting. This will also make the tiny house appear bigger.
The 1"x1" wood cladding also covers two windows in the master bedroom. This will allow air and light to come through without sacrificing security while we're away. Because of weight restrictions, the wood cladding is likely something that will need to be added once set in location.
Here you can see how the green roof will double as a patio. I'm not so sure about climbing through the loft window to get there though. Might have to add an outside staircase (or at the least a rope ladder) once the house is permanently in place.