This would be accomplished using something called a subdomain, with your account you do not have separate Control Panel’s (Cpanel) for each domain name
So to accomplish this here is what you do..
Sign into your domain’s Cpanel
click on the “add domains’ button (towards the bottom on the right)
add the domain name and the info requested
Note there is a video tutorial link on that page if you want more details
Also be sure to change the DNS of the domain name you are adding on.
Make sure you have uploaded the images as well as the code when you published, makes sure the images stayed in the same “place” or folder where they were when you were designing the site but if you would post the URL of the site I could tell what the problem is
I use my own domain name service, not site5. I use forwarding. Depending on your domain registrar (where you bought your domain name), you sign into your account, find the domain you want to point and follow the instructions. That is kind of vague I know, but again,each registrar is different. You will have your main domain name, and the other domain pointing there. Example fo me is: a main domain: Judethree.com, forwarded domain calvarybelington.com if you type in either, they both end up in the same place.