Will's poem is a quiet snapshot of trees moving in the wind. In just three short lines, it follows a single gentle motion: the trees sway, their leaves spread out, and eventually they reach the ground. Nothing dramatic happens, and that's part of the point. The poem asks you to slow down and watch something ordinary.
The speaker never says "I feel," but the word "gracefully" tells us a lot. They admire the trees and see beauty in the way they move. The soft "s" sounds in "sway," "breeze," and "spreading" add to the hushed, flowing feel.
The last line is interesting. "'Til they reach the ground" could mean the leaves drifting down, as in autumn, or the branches bending low. Either way, the poem ends on a note of settling and rest. The mood is calm, peaceful, and a little wistful, like watching something let go without any fuss.