I can't let Autumn pass without a photograph! Leaves stand in common with plants as far as symbolism is concerned. But a group of leaves can stand for a group with a common purpose. Think of Shelley's "pestilent multitudes". I liked the colour combination of this particular group. Everything is changing and that makes me think of "turning over a new leaf". As a psychotherapist, I know that people come to me because they want to change something about their lives. So perhaps this is a good metaphor for transition.