Board Thread:Support Requests - Designing Your Wiki/@comment-44654913-20191213133847/@comment-1038387-20191213140820

Looks like you've just started. I'd advise you to work on content first, like making a good main page. Nobody can design something around things that don't exist. See also this help blog on Best Practices for main pages.

For quick and easy design changes, you can change colors and add backgrounds with the ThemeDesigner.