OH! I forgot - the last step is to get the wax out of the fabric. Hot iron. In our case we were using some real good dye so we took our silk to the local high school where they did some dry cleaning classes and took the wax out for free. We told them to wait until they were ready to change out the chemical. Then the teacher wanted the kids to do batik, too. I think they shut down the program before we got to do it with a bunch of kids. It was a fun thing. Expensive though. There are other methods.
http://www.dharmatrading.com/ good place for stuff like that. I think there are other resist methods - probably better dyes. We were using high end stuff. My friend's mother funded us just a bit. I wish I had some of it around. Makes some nice scarves.