Header

Nice regards,
I struggle a bit to adjust header topics. I’d like to keep elements of the theme, and that search over the part that was on the menu I add an image size of 153×150 pixels.

<img src="<?php echo get_template_directory_uri(); ?>/images/lt-flurl.png" alt="wispy image" /><a href="<?php echo home_url( '/' ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a><img src="<?php echo get_template_directory_uri(); ?>/images/rt-flurl.png" alt="wispy image" />

It should be something to add to this part of the code, if anyone knows how to do this?
I tried to make a picture 303×150 png with this element (rt-flurl.png) issues, but when you load the form header is lost, because the code is defined to be the image where rt-flurl.png. It would be only an additional load picture 153×150 (or maybe 152×149) to be with this cape-flurl.png and somewhere beyond Search works, so that does not change the existing elements of the theme.

I have found a few examples of how to change the look of the header of this topic, but I would like to keep everything as it is, and add just one frame.
.. Or it might be that all that is currently in the header threads moved over to the left, thus making a little more room for the aforementioned image. In this case, I could put a picture wider than 153 pixels.
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https://srb.markostojanovic.net