So I built a locally hosted website from a free theme

So I built a locally hosted website from a free theme called Pytheas.
http://www.wpexplorer.com/pytheas-free-wordpress-theme/

Later I learned about integrating a child theme and since I have not made any styling changes I wanted to incorporate it before its too late. I followed the official guidelines from wordpress on creating a child theme, made it, activated it but it does not fetch the styling from the parent theme. I have made sure that the syntax is correct. I think that the Pytheas theme has some other complicated things going on, probably something to do with header.php and style call outs from there. I have no clue. Any tips on how to make the child theme work?

Thank you,

Nave.