Create a headline image with overlaid text on pages that have a featured image.

functions.php

<?php

function ba_header_image() {
  if ( !has_post_thumbnail() ) return; //don't do anything if there's no featured image

	global $post;

	$post_thumbnail_id = get_post_thumbnail_id();
	$post_thumbnail_url = wp_get_attachment_image_src( $post_thumbnail_id, 'ba_header_image' );

	$headline  = get_post_meta( $post->ID, 'ba_headline_area_headline', true );
	$paragraph = get_post_meta( $post->ID, 'ba_headline_area_paragraph', true );
	$link_text = get_post_meta( $post->ID, 'ba_headline_area_link_text', true );
	$link_url  = get_post_meta( $post->ID, 'ba_headline_area_link_url', true );

	$output .= "<div id='home-headline-area'><div class='wrap'><h2>{$headline}</h2><p>{$paragraph}</p><a href='{$link_url}'>{$link_text}</a></div>";
	$output .= '<img src="' . $post_thumbnail_url[0] . '" />';
	$output .= '</div>';

	echo $output;
}

metaboxes.php

<?php

$meta_boxes[] = array(
		'id'         => 'header-image-area',
		'title'      => 'Header Image Area',
		'pages'      => array('page'),
		'context'    => 'normal',
		'priority'   => 'high',
		'show_names' => true,
		'fields'     => array(
			array(
				'name' => 'Headline Area',
				'desc' => '',
				'id'   => 'ba_headline_area_header',
				'type' => 'title'
			),
			array(
				'name' => 'Headline area headline',
				'desc' => '',
				'id'   => 'ba_headline_area_headline',
				'type' => 'text_medium'
			),
			array(
				'name' => 'Headline area paragraph',
				'desc' => '',
				'id'   => 'ba_headline_area_paragraph',
				'type' => 'textarea_small'
			),
			array(
				'name' => 'Headline area link text',
				'desc' => '',
				'id'   => 'ba_headline_area_link_text',
				'type' => 'text_medium'
			),
			array(
				'name' => 'Headline area link URL',
				'desc' => '',
				'id'   => 'ba_headline_area_link_url',
				'type' => 'text'
			),

		),
	);

style.css

#home-headline-area {
	position: relative;
}

#home-headline-area .wrap {
	position: absolute;
	top: 10%;
	left: 10%;
}