|I think I recognize this as a shape poem, about autumn, and if I'm right, that's a tree.
The words reveal the season from 'cool air' and 'bright hues' to a 'summer sun' waning. You refer to 'cool' again, which might be redundant. Possible opportunity here?
I like the summation and how it reveals. It feels like most poems about Fall focus on the central fact that there is a change in the air and it is ominous.