don't just roll at the ends.....if you do that it leads to the joint being pregnant (fat in the middle skinny at the ends) concentrate more on getting the middle nice and even....and if the stuff on the ends falls out (depending on how good you are) you can just stuff weed down into the ends with a pen or something....if you twist the ends when you go to light it...burn off the tip without trying to inhale and bite off the very tip (so that you see green) of the end your going to smoke from....i have a friend who tries to roll and fails misserably lol....first she only use a half a gram about to make the damned thing then it's all in the middle BUT STILL FLAT and the ends are twisted and she doesn't nip off the end....then wonders why it won' thit....she's such a virgin lol