Editing header with image

hey,

I just downloaded a 3 column template which is this one :https://zed1.com/journalized/themes/journalized-blue/

and Wanted to edit the header so insted of showing the title and description,it showed an image inside.This is the header code:

<div id=”headerblock”>
<h1 id=”header”>“><?php bloginfo(‘name’); ?></h1>
<?php bloginfo(‘description’); ?>
<p class=”centerP”>[powered by WordPress.]
</div> <!– headerblock –>

This is the current code im using but it overlaps the image out of the header box:
<div id=”headerblock”>
<img src=”https://bootyshelf.com/images/logo.jpg&#8221; title=”BootyShelf.com” width=”579″ height=”270″>
</div> <!– headerblock –>

can anybody help me?

Kind Regards

Matt