Massing + relationships

In Tuesday's pin up I determined that I need to move away from the tetris/box L shape, but lately I feel like I'm just staring into the rhino abyss so these are purely to create relationships between different units, not to express material or surface. In reality, I think the surfaces will interlock across multiple units rather than merely representing one person's flat or another (here: red or yellow). Will be working on that as well.