1. Understanding material application: watercolor, colored ink, colored pencils, pastels. 2. Demonstrating basic painting techniques: form design, color matching and application, light and texture. Analyzing illustration styles and commercial applications: introducing the characteristics of illustrations from various countries and how to combine them with commerce to enhance visual communication and added value. Especially when illustrations are presented in different media, the purpose of illustration also varies greatly, for example: the parent-child nature of children's picture book illustrations and the explanatory nature of product packaging illustrations have significant differences...