what are the dangers and things to avoid when making your own flavors? i like the idea of taking two juices that are "store" bought, but if i decided to get creative, what are the "do's" and "donts" i'm not trying to take away business from the manufactures...but i am trying to play a little with my own creations. (as seen on a previous post with my french vanilla expresso flavor) not to mention i'm the type of guy that likes to learn all sides of something i'm interested in.