put the dried trim in a large jar or jug type vessel. stretch a piece of pantyhose over the opening and secure well. now simply turn the vessel over and shake it like a salt shaker over a large piece of clean glass. wipe the powder on the glass into a pile. scoop it up and smoke it. that is your kief.
make sure the trim is dry to use this method. you can lightly crush the trim before placing it in the shaking vessel. i just grab a handful and lightly "scrunch" it as i dump it in. not too much or you will get leaf matter in your trim.