use reverse engineer in your inventory on a green item you crafted do it and get lucky and you get a blue recipe for that item now craft and reverse that blue item and if you get lucky you get a purple recipe. its realy simple but if you dont know its almost imposable to find out
I've done that as well and yeilded a couple of useful purples, however I'm still worried about end game. If I spent all the money getting crafting up I want it to come in play somehow when I get into epic gear. Like how in WoW( I'm not comparing just for instancing) the armor smith would get those packs to increase armor on his epic gear thus making it a usefull profession.