Lovely.

This poem is showing the prior day's Waldo how those hanging lines should be done, and what they add.

Because each couplet here also leads to the next, but the one two down may not be directly led into from where we are at now. And the only good way to arrange that here is via these couplets.

And the center-pieces in particular work great together, and I also love the gentle chiasmus, that is not direct, but it still invokes an aesthetically pleasing feeling.
And you know what? For such a small poem to invoke this airy and breezy feel of something that is light and yet bigger on the inside? Very well done.

I suspect this can also feed into my criticism of Celibacy and Lost Signals, that I feel you too often try to add more to a piece than it calls for. And yet Waldo showed us that sometimes you do need more, and it has to be more than mere structural artistry. This poem though, nails it.