It's not difficult to do yourself.
Watch this http://cakecentral.com/articles/763/how-to-make-a-sugar-bottle
Dominic does a wonderful job of explaining it, very clear and concise. I've done a small diamond according to the directions in CC mag. It looks good on the inside but I needed a larger tube, so it's not usable, totally my fault. If I had used the right size tube it would have been perfect.
Kayla's video came up right after so you can see the differences. She uses a rubber latex product from Michaels.