Add custom fields after post/page title

There’s the get_post_meta() function to retrieve those data.

So basically, you’d write a function in your functions.php file (or in a custom plugin – take “Hello Dolly” as example) and hook it.

<?php
/* Plugin Name: (#66495) »kaiser« Headway Title Button */
function wpse66495_headway_title_button()
{
    return printf(
         '<div class="title-btn"><a href="https://wordpress.stackexchange.com/questions/66495/%s" alt="https://wordpress.stackexchange.com/questions/66495/%s"><img src="%s /></a></div>'
        ,get_post_meta( get_the_ID(), 'meta_key_link_url', true )
        ,get_the_title()
        ,get_post_meta( get_the_ID(), 'meta_key_thumb_url', true )
    );
}
add_action( 'headway_after_entry_title', 'wpse66495_headway_title_button' );