We have always loved the crackle look in pottery as well as Bob Leatherbarrows wonderful glass Recently we have spend time developing a simpler technique to accomplish a similar look in smaller pieces. Posted 3 picrues in my album here (bookie13) so you can have a look.
We also have some new crackle pieces on our web site.
I am not trying to be disrespectful, but Barry has spend a lot of time developing the technique. If you want to know you might think about taking a course from him.