Dude you can totally forget all that stuff, if you've got a can you're cool. First bend the side of the can into a flat-semi bowl, just squeeze it so it will hold weed. Next just poke like twelve or fifteen little holes in the "bowl" that cover an area about the size of a quarter or a little bigger. Now put the can on its side, bowl side up min you (as if you're retarded) and put a small to decent amount of weed over the holes. Now put the hole to your lips and suck to see if the weeds too broken down or if the holes are too big (basically make sure you dont suck weed into your lungs), if you're not suckin weed in your mouth but you are getttin a little air you,re good to go just light the weed and suck n puff" you're good to go! <-- did I already say that?