Different Single Post Templates for attachments

I want show some additional information from single image page. Currently there is no single image page. So i duplicated single.php to image.php and changed the content like <?php get_template_part('templates/content', 'image'); ?>.
Also duplicated templates/single-content.php to templates/single-image.php.

This is not working properly, it loads the correct template but not showing single image. Then i added custom code for loading image.

Is that correct or anything i missing?

I doubt you will need single-image.php. So if the correct template loads then what is inside your content-image.php template?

Oh sorry! i created ‘content-image.php’ only. i have entered wrong name here.