As for trimming I take of the extra leaves but will leave most of the buds on the sticks. I have no actual method, just look and decide which stay on the stem and which are cut off. The moisture in the stem will help to control how fast or slow the drying. Before putting in the jars most of the buds still on the sticks are taken off but I still leave some sticks to control humidity.
I do not weigh out how much goes into the bag. It is just a matter of trimming and putting into the bag.
The brown paper bags we use are the ones that the supermarket has for bagging groceries.