greetings, my names Keith. I would really appreciate some advice on what clay to use. I need a air dry clay. The one i use now, seems to want to crack like crazy when it dries. If you have any advice on stopping that from happening, i would greatly appreciate it also. At the moment I am using Amico air dry clay. I also start of with foam as my base and build it off that. Please let me know what works for you, made some amazing sculptures but the cracking ruins them.