1. Street shops: The billboard picture of "Woodpecker Error Correction" exists in some shops' signboards, price tags, publicity slogans and other text carriers. You can pay attention to the street shops and see if there are any similar pictures.

2. Network search: You can find many related picture resources by inputting keywords such as "the billboard picture of woodpecker" in the search engine. When choosing pictures, you need to pay attention to choosing pictures that match the active theme.