STEP 1 - Choose a subject. In this case I used a stuffed beany-baby rabbit. Do not lift your brush to get continuous contour lines. Use ink, tempera, or diluted acrylic with a brush to do this. You can sketch with pencil first if it helps you. Cardboard Contour Painting October 30, 2014 STEP 2 - Gesso in the highlights with a big brush. Don't miss his fur and make a paint in a background for depth. STEP 3 - Apply botanicals, tissue paper, or other materials for color and texture. Use glue, and press them down with fingers.