'Invisible Cities' - Building ideas

In our digital painting class today we were asked to generate a series of building ideas by working rough, using big brushstrokes and then refining them later on. We were also taught how to duplicate part of an image and we used this technique to take aspects of one building and make a new one. This helped a lot in terms of idea generation.

Here are some of my building ideas for Calvino's 'Invisible Cities'.