I've read a couple really good blog posts in the last couple days about talisman creation.
The first is from The Crossroads Companion, written by a student in the Red Work series of courses. He's made the seven planetary talismans using a technique inspired by Chris Warnock. I learned a couple things I didn't know that will make my own future talismans much higher in quality.
The second is from Practical Solomonic Magic, written by my long-time colleague, Asterion Mage. He's come up with a brilliant way to make gold talismans out of beeswax. I'm looking forward to experimenting with the rosin and shellac he recommends.