Clone website to another domain name

Hi – i made a website – and exactly same website is going to be at another domain name, BUT another logo.

I tried to copy all folders to the other domain name (because i use LOTS of time to make the page, so i dont want to start all over), but now no matter where i click, its going to the other domain name. But its not working, because as soon i change the wp-config to the correct new database name, all the pages is not there. There is only the style, but not all the pages..

The first is: peyman.in

The new one is: peymanart.com

Soo how is the most easy way to get ALL the page incl. everything – to the other domain name also?

Kind regards Jane