This certainly does have an autumn feel. Suggested improvements would be sharper focus and autumn colors in the background. I do like the idea of presenting the leaves like blossom petals. Nice creativity.
I like this. It is in my humble opinion however, that the border takes away from the image. Changing or removing it altogether may make an improved difference.
Nice composition and colours. Nice soft focus. One suggestion I would like to make is to leave a bit more space between the arrangement and the frame. Or do away with the frame. It crowds the leaves a bit.
I like the idea very much. But it's not so in focus. Also, I would suggest that a thin black border would give it the elegance this photo deserves. I do like the idea tho. Verena