In this practice rest your attention lightly (yes, lightly) on the breath.
The second part of the practice is working with the breath. In this practice rest your attention lightly (yes, lightly) on the breath. Feel it as it comes into your body and as it goes out. There's no special way to breathe in this technique. Once again, we are interested in how we already are, not how we are if we manipulate our breath. If you find that you are, in fact, controlling your breath in some way, just let it be that way. It's a bit tricky to try to be natural on purpose, so don't get caught up in worrying about whether your breath is natural or not. Just let it be however it is.