[member="Gherron Vael"]
Art of the Small allows you to alter things on a molecular level, if you focus enough. It's not an easy feat. It's almost like looking at the world/an item/w.e through a microscope, and then messing around with the very atoms that make it what it is... In doing so, you can change the properties. The main example the Wookiee page gives is how she altered her tears in order for them to have healing properties. Now, obviously this isn't grounded in logic... But it's Star Wars. I tend to view it personally a branch of the Force similar to alchemy. Only on a much, much deeper level. Your character would have to seriously know what they were doing, what they were looking for/to alter in order to do so.
Just my view of it, others may see it differently. Asha (my old Jedi, whom Gherron knew in his Padawan years) was a practitioner of AotS, albeit it wasn't something she used in every day RP. I don't think I used it once here on Chaos.