Begin at the pitha
A temple is easier to understand when we build it from the ground up. The pitha is the platform: a steady base, a raised edge, and the first line your eye can hold on to. Everything above it depends on this starting level.
More detail
The pitha is the level where the temple first separates itself from ordinary ground. In the model it is shown as a raised platform and moulded edge, so the next parts can be read as stacked weight rather than floating forms.