The speaker crosses a surface that keeps getting less trustworthy, and each stanza shows the danger growing. At first the water ripples but holds, so the speaker steps lightly. Then flowers are crushed, and the pace slows. When the ice cracks, the speaker runs, and the movement shifts from caution to panic. Even the leaves blowing away seem to add to the sense that nothing is steady. By the end the speaker stumbles, and then the ground simply opens.
The poem reads like a slow loss of control. The speaker's reactions, from careful to frightened to helpless, suggest a growing anxiety, though the poem never says what the footing stands for. It might be a relationship, a mental state, or life more generally; that is left open. The short lines and plain wording make the mood tense and quiet, like holding your breath. The final fall into the abyss lands with a sense of inevitability, as though the speaker was always heading there.