Series on transitoriness: progress?

Two weeks ago I went to the second photography class and we were invited to bring in some new photos that we had worked on in relation to our series (read here for part I). I brought in some new images that I was quite happy about, but I noticed immediately that my teacher was not. She commented: "it's about  Autumn" and "they're all leaves." Yes, they were leaves, she was correct about that. But it was also all I came across in the park that gave me the feeling of transitoriness. I had photographed some dried up flowers, but they didn't go beyond the feeling of snapshots.
She distilled four sets of two pictures from my collection sofar:

set 1, image 1: yellow tones & water

set 1, image 2: yellow tones & water

set 2, image 1: blue tones and water

set 2, image 2: blue tones and water

set 3, image 1: leaves and mud

set 3, image 2: leaves and mud

set 4, image 1: yellow tones and leaves

set 4, image 2: yellow tones and leaves

The teacher noticed that somehow the prints didn't come out as sparkly as the digital originals I had showed on my iPad in the first class, so I'll have to look into that.
She gave me a tip: to take a photo of (half) buried clothes in the mud. She also said that one of her students once took a photo of something on the ground with mud, tore up the picture into pieces and then took a photo of that. Nice ideas, but that's not really my style. She concluded I still had a lot of work to do. Well, I don't mind that at all!