Add category to single post page

I've added to my single-post.php a code to display the post categories above the title, it looks good here: http://ift.tt/19BVBvA

But not here: http://ift.tt/1bKA6dO

I have different post templates. What can I do to make the category change it's position with every post?

I think I should put my category code in the Archives.php but I'm not sure where. I don't want to mess up my code, any help is welcome.

Thank you