Best way to use images for Next and Previous links in Wordpress

CMS & WordPress
1

What’s the best way (or any working way) to use images with the next and previous links in Wordpress. I tried this and it doesn’t work:

<?php previous_posts_link('<img src="<?php bloginfo('template_url'); ?>/images/right-arrow.png">'); ?>

Suggestions on how to address this or fix the code above?

2

check that you have <?php inside the first <?php
same for closing ?>

<?php
previous_posts_link(‘<img src="’. bloginfo(‘template_url’) .‘/images/right-arrow.png">’);
?>

3