How to list pages using featured image and title?

Hi,
I need some help on this :
I want to list some pages displaying the featured image and the title (both must be a link to the permalink)
I could show the featured image on the green bordered div but for a parent page

But what I need is to have that effect of the red div
Here's the code

<!-- Begin pages -->
<div id="pages" style="border:2px solid green">
<?php $pages = get_pages(array('child_of' => 1006)); ?> 
<ul>
    <?php foreach ($pages as $page): ?>
        <li>
			<h2><?php echo $page->post_title; ?></h2>
            <?php echo get_the_post_thumbnail($page->ID, 'full'); ?>
            
        </li>
    <?php endforeach; ?>
</ul>
</div>
<!-- / pages -->


<!-- All pages -->
<div id="all-pages" style="border:2px solid red; margin-top: 30px;">
<ul>
  <?php $pages = wp_list_pages('sort_column=post_title&title_li=&include=471,453,1248,459,458,,469,457,463,465,473,475,494,477,479,481,487,489,491'); ?>
</ul>
</div>
<!-- / all pages -->

HTML:

any help would be really apreciated
Thanks

website is @ fotografiasdeangola(dot)com/1/benguela/