RSS Feed Button Does Not Show Up

Hello there,

I need help about custom buttons. I want to add RSS feed button below my posts.

No matter what I try I cannot make my RSS.png image appear on page. When I refresh the page just an empty space shows up then immediately disappears. This is the code i am using for my single.php file.

I placed the image inside the image folder that i created which is located in the child theme folder. I also tried adding long http address to the code but does not work.

<div id="primary" class="site-content">
		<div id="content" role="main">

			<?php while ( have_posts() ) : the_post(); ?>

				<?php get_template_part( 'content', get_post_format() ); ?>

					<a href="<?php bloginfo('rss2_url'); ?>" title=""><img src="<?php bloginfo('template_directory'); ?>/images/rss.png" width="32" height="32" alt="" /></a>

				<!-- <nav class="nav-single">
					<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
					<span class="nav-previous"><?php previous_post_link( '%link', '<span class="meta-nav">' . _x( '←', 'Previous post link', 'twentytwelve' ) . '</span> %title' ); ?></span>
					<span class="nav-next"><?php next_post_link( '%link', '%title <span class="meta-nav">' . _x( '→', 'Next post link', 'twentytwelve' ) . '</span>' ); ?></span>
				</nav>.nav-single -->

				<?php comments_template( '', true ); ?>

			<?php endwhile; // end of the loop. ?>

		</div><!-- #content -->
	</div><!-- #primary -->

Thank you