Yesterday, I made another small (8" x 10") piece with trees. These trees were free-motion embroidered on a light weight fabric, and then cut away using an exacto tool. Finally, I stitched them to the background.
After drawing the trees on sketch paper, I traced them onto the lightweight fabric, and put the fabric in a hoop. I used a straight stitch, whereas in the previous example I used a free-motion zig-zag. I like the way they look, but the free-motion embroidery is too labor intensive to use for anything larger. I'll keep looking for another way to make trees, so that I can make larger pieces with trees as the theme. I suppose I could just make simpler trees!