Michael,
This is marvellous; I really love it! On first reading it, it brought to mind one of my all-time favourite poems,
"Naming of Parts" by Henry Reed.
Both poems talk about a specific thing, i.e. a dilapidated house and how to clean a rifle, with each stanza ending with a pastoral image.
I haven't got any nits with it, as it is. Just praise for a well-written poem. I'll be interested to see if/how you revise it in any way.
Jayne