Each stanza of the poem is three words long, and each one drops a single image: a shadow, a breeze, a drop of water, a heart. These images then turn into something heavier. A shadow embraces mistakes, a drop becomes rivers of tears, and a heart fills with memories and fears. The speaker seems to be looking back on pain, and the pattern suggests that small things can grow into large hurts.
The middle of the poem is the turning point. "Just words, / Paper, / Threats" sounds almost dismissive, as if the speaker is trying to shrug off what hurt them, though the word "threats" gives away that it didn't feel harmless. After that, the tone grows quieter and darker, with "haunting" and "dead." The ending, though, gives us "beautiful" stars and "crimson" scars, so the darkness isn't only ugly. The mood is sad and brooding, with a faint sense that the speaker has found something almost beautiful in what was survived.