Assembly 01 (here)
Assembly 02

* the star on any part or assembly indicates that the parts have been modified over the years, and early versions may be slightly different. This doesn't change the step, but you should confirm your parts in the instructions.

Slide 18: Depending on your intended floor finish, paint or faux-wood your floors to just barely cover the inside tracing.
Applied floor finishes
like wood or carpet
are applied after construction.

Just Barely covering the outside tracing and the inside tracing still leaves a bare wood area between the tracings for the glue to grab (glue doesn't stick well to paint)