SEO Platform as a plugin. Calling it from inside a custom theme.

Hi.
I built a plugin from the folder with the application. So, the folder is called body_call and inside has the body.php, the index.php (in which I placed the plugin “header copyright”) and other functions like forms and so on. In this folder (body_call) I also have the image folder that has the images, the css folder that has the style.css and the js folder.
So, I made the function to be called from the new plugin “platform ()” and I called it from a template that I made called keywords (since the platform is about SEO keywords).
The images do not show! And the style sheet is not accessible, but the content from the body is more or less there (its scramble). I used the path for the images like this: images/image.jpg and the style sheet is called the same way: css/style.css. All this inside the body_call folder (parent folder).
The plugin shows on (domain / localhost)/keywords but when I click on a link it goes to (domain / localhost)/keywords/index.php and gives a page not found…
This is my 3rd day working with this basic problem (I can tell its basic, and I figure that the problem is in the calling the files)
All the best,an dthanks for your time.
Miguel