well some if not most of the leaves will have yellowed and died off...go to radioshack and get a 60-100x lighted microscope for 12 bucks...look at the crystals...when they are "done" is kinda up to you...if they're all clear, it's not done...if theyre milky, it's a more speedy kinda high i guess you'd call it...if they're amber, that gives the couch-lock high, so whatever you like best...but when most/all the pistils are wilted, thats pretty much a good way to call it done