The colors are very nice. A C&C suggestion: look at all parts of the frame including the edges, and ask whether, and how those elements add or detract from what you want the photo to express. When you are standing within a scene you're probably relating to many elements at the same time, in three dimensions. A photo as a two-dimensional representation is perhaps a stronger statement when it is more selective. Choose something that drew you to the scene and then draw us into it.
Thanks for the suggestion. That's a problem I often have; I can't identify something particular; it's just the whole scene. The last one, for instance: the combination of empty swing, bicycle, and fall leaves said something. The camera's doing a great job at representing what I'm "saying"; I'm just not very good at saying it. This may be more of a life problem than a mere photography problem...