WordPress - show an author bio using a custom photo, on an author page

wp_custom_author_header.php

<?php 
$curauth = (isset($_GET['author_name'])) ? get_user_by('slug', $author_name) : get_userdata(intval($author));
?>

<h1><?php echo $curauth->display_name; ?>'s blog</h1>

<?php
  $publisher_photo = get_the_author_meta('your_photo');
  $image_src = wp_get_attachment_image_src($publisher_photo);

  if($image_src[0] != NULL) { ?>
    <div class="row author">
      <div class="two columns mobile-twelve">
        <?php echo '<img class="author-picture" src="'. $image_src[0] .'" />'; ?>
      </div>
      <div class="ten columns mobile-twelve">
        <p class="author-bio"><?php echo $curauth->description; ?></p>
	<a href="<?php echo site_url(); ?>/about/" class="author-link">Read More</a>
      </div>
    </div>
<?php } ; ?>