Here’s an old booklet I found which is perhaps more related to scrying in Pagan paths. It includes a very practical lesson in how to make a mirror of your own and how to use it ritually. This is a read-only ‘scribd’ document, but if you Google ‘ Make and Use a Magic Mirror pdf’ you will find downloads. I haven’t included them here in case it breaches anyone’s copyright.
Here’s the link:
http://www.scribd.com/doc/117253057/Donald-Tyson-How-to-Make-and-Use-a-Magic-Mirror