Theme taxonomy term page with template override I know this is far from duplicate but im a bit stupid. 
I am trying to theme the terms page for each term for a specific vocabulary i created. 
I 've used path auto when i was creating the terms so i have a specific path for each vocabulary term. 

My website is using a subtheme that i created by copying and pasting the main theme which is ninesixty. So i have tried creating a new template for taxonomy terms like taxonomy-term--12.tpl.php added my html code and unfortunately the template wasnt overridden.
I have also tried to override the template using the template.php file with no luck.
 I dont want to use any module so any clear answer will be helpful.
You can use the below filename structure to create a taxonomy term template:

taxonomy-term--[vocabulary-machine-name|tid].tpl.php