1. Select a theme, and the cover should directly reflect the theme of the report. If it is an investigation report about a specific creature, the cover should show the picture of the creature or its representative symbol.

2, add a title, add a title above or below the cover, should be concise and clear to express the theme or main content of the report.

3. At the bottom of the cover, you can add the name of the researcher or team who conducted the survey.

4. Choose colors and fonts, choose fonts that are clear and easy to read and consistent with the theme, and use appropriate colors to attract readers' attention.