Paul Klee was a Swiss/German painter of abstract art. His Senecio painting is made of many geometric squares within a circle, and is great inspiration for young artists.
1. Trace a round shape like a dish to make a large round circle in the middle of the paper. Add a neck and mouth using only straight lines. Draw two eyes that touch each other in the middle. Trace with a Sharpie marker, and color all heavily with oil pastels.
2. Paint over all with acrylic paint. I recommend one color to keep things simple. Let dry.
3. Use an old plastic card (like credit or gift card) to scrape the paint away. Keep scraping until the art shows through, but a bit of the paint color is left for an aged effect.