my name is Costin and I am a beginner Magento 2 developer.
I have a question regarding on how to **add a button to header.phtml** and to be displayed on the frontend?

What I have done until now:
 

 - I create a basic module in /app/code/Vendor_Name_Module_Name - folder



 - Copied the file vendor/magento/module/theme/view/frontend/templates/html/header.phtml into /app/code/Vendor_Name_Module_Name/theme/view/frontend/templates/html/header.phtml.



what I want to achieve is :
[![add button][1]][1]


  [1]: https://i.sstatic.net/kwBu7.png
Any help is much appreciated.