Re: What did I do wrong?
If you look at the files in the classic template you'll see that all of the changes from the template_default to the classic are accomplished using NOTHING except the stylesheet and some images.
So re-read the tutorials. You do not need to copy any files unless you are modifying them. Try downloading some of the contributed custom templates and see how they are constructed.
Please do not PM for support issues: a private solution doesn't benefit the community.
Be careful with unsolicited advice via email or PM - Make sure the person you are talking to is a reliable source.