Unless if you have a huge-ass bowl, you don't really want to just stick the nug in there and light up. Air will go around the nug and into the hole, so you'll have to toke harder to get smoke. I would just suggest taking your nug in your thumb and forefinger, and break it up with your other hand, just packing little pieces of the bud into your bowl, making sure to fit them in so it's nice and tight. A properly packed bowl will stay lit for the whole session.