You can also adjust the color scheme of your channel to better match the new background.
Adding a Background Image
- Log into your YouTube account.
- Click on the Account link on the upper right corner.
- Click on the Edit Channel link.
- Click on the Channel Design link on the left side of the screen.
- Scroll down the page to the section marked Advanced Design Customization. Within that section, you'll find a box labeled Background Image.
- Click on the Browse button and select your background image.
- Click Update Channel to save changes.