You must create a subtopic to customize the look. Otherwise, every time you update the kernel, you will have to reuse your changes. You can tweak the default Drupal 7 theme (Bartik) by following these steps .
Once you do this, copy the user-profile.tpl.php file to the subtopic directory (/ sites / all / themes / mytheme).
Finally, make the changes you want to make to user-profile.tpl.php
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