How to create custom View template?
How is your override requirement? Is it for all the views or for a certain views?

For certain views:
In that views admin page : go to Advanced -&gt; Theme: Click on Information

you will see the active templates for 'Display output' in bold (views-view.tpl.php) and rest available theme suggestions for overridden (comma separated). 

Now copy views-view.tpl.php from views contrib module theme folder and put it in your site theme folder, rename it to one of the name suggestion available in views. Make changes to your template.

Clear cache and check.