Well Beadfest was absolutely AWESOME this year. I took a 2 day class with Chad Trent on making Blown & Inside Out Boro beads. For those that may not know, Chad is an awesome lampwork artist specializing in boro beads and pendants. I'm not even sure if he works in soft glass at all. His ID is Cosmo on Lampwork Etc.
Chad's a gifted lampworker and an excellent teacher with the patience of a saint. Even with taking notes while he demonstrated I found myself asking a million questions. This is 1 technique that will take quite a bit of practice in order to master it.