Update twenty twelve theme wordpress

Question

I'm trying to update couple of things on my website design using wordpress. I use the twenty twelve theme. so if anyone could please advise how to do the following updates:

1- Move the pic to the top of the page before the page title, so that it would be the same size but just position it on the top.

2- Resize the title to be with bigger font and increase the font of the second title as well "Anabaptist Believers....."

3- Change the color of this subtitle "Anabaptist ...." to be blue the same color as the big title and make it boldface as well.

Answer 1

For 1 you need to move:

<?php if ( get_header_image() ) : ?>
<a href="<?php echo esc_url( home_url( '/' ) ); ?>"><img src="<?php header_image(); ?>" class="header-image" width="<?php echo get_custom_header()->width; ?>" height="<?php echo get_custom_header()->height; ?>" alt="" /></a>
<?php endif; ?>

above the <nav> tag in the header.php file.

For #2 you need to increase the .site-header h1 font-size to a higher number.

For #3 you need to change the colour to: color: #084b8a;

EDIT:

<header id="masthead" class="site-header" role="banner">
    <hgroup>
        <h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
        <h2 class="site-description"><?php bloginfo( 'description' ); ?></h2>
    </hgroup>
    <?php if ( get_header_image() ) : ?>
    <a href="<?php echo esc_url( home_url( '/' ) ); ?>"><img src="<?php header_image(); ?>" class="header-image" width="<?php echo get_custom_header()->width; ?>" height="<?php echo get_custom_header()->height; ?>" alt="" /></a>
    <?php endif; ?>
    <nav id="site-navigation" class="main-navigation" role="navigation">
        <h3 class="menu-toggle"><?php _e( 'Menu', 'twentytwelve' ); ?></h3>
        <a class="assistive-text" href="#content" title="<?php esc_attr_e( 'Skip to content', 'twentytwelve' ); ?>"><?php _e( 'Skip to content', 'twentytwelve' ); ?></a>
        <?php wp_nav_menu( array( 'theme_location' => 'primary', 'menu_class' => 'nav-menu' ) ); ?>
    </nav><!-- #site-navigation -->


</header>

ANOTHER EDIT:

<?php if(is_front_page()) :
    echo '<img src="">';                    
endif; ?>