You can show students how to overlap leaves and blend colors with oil pastels, and have very lovely picture as the result.
1. I tend to think of the maple leaf as the classic fall shape, and made templates out of chip board with the stem left off. Give each student one leaf and ask them to trace at least two leaves that overlap. Ask the students to choose which leaf is on top, and explain that all the lines inside that leaf must be erased. They can then add some leaves going off the page, and some veins as well.
2. All of the pencil lines are to be traced with a thin black marker.
3. Ask the students to use at least two oil pastel colors in each leaf, overlapping as they go along. Oil pastels are the best for blending colors together, so the goal is to not have any “hard” edges between the colors.
4. Lastly, the background needs to be colored in with a contrasting color.