Last Thursday Kim taught us about the idea of grids, and their use for page layouts.
Most design, be it book layout, poster etc. Will probably use a grid system for placement. It is a quick and reliable way to get the balance right within your composition. Especially when combining image with type.
Here are some photos from my experiments, starting with same size text to create hierarchy and then moving on to different point sizes for headers, sub-headers etc. Then finally adding image into the layout.