How can I REALLY create an e-mail template?

Hey, all! I have what I thought would be a simple question: How can I create a re-usable e-mail template that will appear in the list of "My Templates"?

I've seen the instructions for creating a "template," but it's really only a draft campaign that I can copy. My predecessor apparently created a bunch of templates (see image), but they're outdated and I would like to update them. I can't for the life of me figure out how to either create a true template, or edit one of the existing ones.

Any ideas? I really hate having a "draft" sitting in my campaign list that I use as a workaround.

Thanks!