How to display blog image below introtext in entry view

When I click read a blog post, the blog image is shown above introtext (if enabled). I know I can disable blog image or introtext or both in entry view, however my goal is to display content of the blog post in this order:

Introtext
Blog image
Blog content

I was looking into template files but can figure out. I assume that content of an entry is called by

<?php echo $blog->content; ?>

So would be possible to do some edits of either template or core files to achieve what Iam after ?