So, you're ready to add your own look and feel to Analytics SEO.
The first step is to decide the URL you want your whitelabel site to be available on. You will then need to create a DNS record for this domain. This is usually done using a control panel on the site you bought your domain registration from (e.g. Go Daddy). The important thing is to create a new CNAME record which points to www.analyticsseo.com.
Once the DNS record has been created, you can enter this new domain name as your whitelabel domain, and start setting the other whitelabel site settings, such as the colours and uploading new graphics files.
Your Google Analytics account details are only required if you want to allow your customers to grant access to their Google Analytics data to your Google account. You can leave this blank, but your customers will then have to enter their own Google account details in order to set up Google Analytics integration.
When you save changes to these settings, you should be able to see the changes on your whitelabel site instantly.
Good luck, and happy whitelabelling!