And I'm also going to enter this in this week's CAS-ual Fridays challenge!
I did the yellowish backround in watercolors. The leaves were made by stamped the leaves on white cardstock, then inking various dye inks over them, and dabbing a damp (not soaking) washcloth over them. It helps the colors blend.
The movement in this card:
The leaves, starting at the top of this card, and "falling" down to the bottom. The watercolor backround serves as a "river" to kind of help the flow of the leaves.