It's interesting that I haven't gotten any answers, but then again, it's not an easy question. The Lotus Sutra is highly metaphorical, and it's teachings aren't often found on the surface. While the Lotus Sutra does teach about meditation (mostly it's importance, not necessarily a method, at least that I've found so far), and sunyata (seeing it as the last experience before full Buddha-hood), mindfulness almost seems to be absent from the sutra, even though it's importance cannot be overstated. However, as a higher teaching of the Buddha, and one of his last sermons, it's expected one is already familiar with most of the other teachings of Buddhism, as one of the primary roles of the sutra is the teachings on upaya and the infinite life span of the Buddha. With the sutra being highly devotional, I've found that mindfulness can actually be found throughout, particularly in the mindfulness of the Buddha, and mindfulness of the Dharma. The Lotus Sutra has many meanings, and it sometimes takes much practice and meditation on it to dig out the deeper aspects. The very recitation of the sutra, with it itself teaches as one of it's practices, is a type of mindfulness and meditation. But this is one of the reasons why I think it's important to understand it from the Zen perspective, to be able to dig out those deeper meanings that cannot be found on the surface. It turns out to be a highly mystical text, with much esoteric meaning involved.