Below, you'll see any text that was highlighted with comments from the reviewer.
I especially love the repetition! The structure of each line and each stanza is also very clean while also feeling natural, same applies to the rhythm.
I think adding more would clog the flow of the piece, unless done very artfully. The ambiguity is part of what makes it so beautiful, in my opinion.
I just love this entire poem, it's incredible and so well-written. One question, though - what's the significance of the title?