The theme in a recent 4x4 swap that I joined was "Autumn". So here is my take on the theme.
I used torn paper to mask the background to create the skyline and hills and the setting sun. The tree is a stamp from the Elusive Images "Arboretum Design-A-Tree Set". I stamped the bare tree using Adirondack dye ink (Espresso) and then added the leaves by colouring the small leaf stamps with Stampin' Up marker pens in various autumn shades and stamping them on the tree and on the ground around the base of the tree. The leaves on the background were stamped using Vintage Photo Distress Ink. I think are from a set of clear polymer stamps I got a while ago in Partners, I think they were sold under the Partners brand name.