Originally Posted by momoese

Starting at the lowest brown leaf stem and working up the plant, pull the brown part away from the p-stem just a bit and cut it off right at the point where the brown turns to green using a single edge razor blade, box cutter, sharp knife, pruning shears, etc. After a week or so the edge that you cut will shrivel and look more natural. That's how I do it. I can do a photo tutorial when I get some time if that would help.