image-headlines installation

Hi,
To install Image-headline I placed the image-headlines.php in my plugin folder and the fonts in a folder called image-headlines located in wp-content. In my dashboard I activate the plugin. Then what do I do? Under option I tried to access the tab called “headlines” but I get this message “Not Found The requested URL /wp-admin/image-headlines.php was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. “
What do I miss?

thanks