Edited my content-page.php for the desired effect.
Added
<img src="<?php echo get_stylesheet_directory_uri(); ?>/images/PostHeader.png" />
before the <article> tag, and
<img src="<?php echo get_stylesheet_directory_uri(); ?>/images/PostFooter.png" />
after the </article>
Working on just manipulating the “content-image” to show behind content and repeat-y until it reaches the bottom.
