http://timholtz.com/12-tags-of-2012-september/. I was able to take his class a couple of months ago at Absolutely Everything in Topsfield, MA so I was acquainted with the metal sheets. Unfortunately, I liked it so much I used up my supply and haven't replenished it so I substituted electrician's tape for the metal background. It was downhill from there. Anyway, the key of the monthly tags is to have fun playing along.
Make a tag with what you have and join in the fun.