<div class="author">
<img src="<?php bloginfo('template_directory') ?>/authors/<?php the_author_ID()?>.jpg" alt="<?php the_author(); ?>" title="<?php the_author(); ?>" />
<?php the_author_description(); ?>
</div>
<!-- author -->

<div class="author">
 <p><?php the_author_description(); ?> </p>
</div>

<div class="author">
<?php   echo get_avatar( get_the_author_id(), '1' );   ?> 
 <p><?php the_author_description(); ?> </p>
</div>
<!-- author -->

Wordpress -  Grab author description & image

wordpress

PHP