What are some paintings with environmental protection themes?

Tools needed: cardboard, colored pencils, pencils, water-based pens

1. First, write the theme "I am a little green environmental protection guardian".

2. Secondly, use colored pencils to add hand-drawn drawings and design the layout.

3. Third, continue to use colored pencils to add hand-drawn drawings to enrich the layout.

4. Fourth, use a pencil to draw a border to add content.

5. Finally, add content with a water-based pen; this "green and environmentally friendly painting" is completed.