As an experiment, Matt has turned on custom headers for the plugin directory.

How to add a custom header:

  1. Make a 772×250 pixel jpeg or png
  2. In the plugin root directory, create a new directory "assets":
    [shell light="true"]mkdir assets[/shell]
    After you've created the assets directory, you should have the following directories in the plugin root:
    [shell highlight="3"]
    $ ls -l
    total 0
    drwxr-xr-x 4 per _www 136 Jan 11 22:19 assets
    drwxr-xr-x 3 per _www 102 Jan 11 19:57 branches
    drwxr-xr-x 3 per _www 102 Jan 11 19:57 tags
    drwxr-xr-x 5 per _www 170 Jan 11 19:59 trunk
  3. Copy the 772×250 pixel jpeg or png to the assets directory:
    [shell light="true"]cp my-custom-plugin-header.png assets/banner-772x250.png[/shell]
  4. Add the assets directory to svn: [shell light="true"]svn add assets[/shell]
  5. Check it in: [shell light="true"]svn ci -m 'Adding custom header'[/shell]

I've added a custom header to four of my plugins, please have a look: lorem shortcode, WebPutty Helper, WP-DenyHost and Remove "Comments are closed".