Just finished listening to the podcast at http://simplyrecordingpodcast.com/self-mastering/ about mastering, and learned a lot more about the tools I got in Logic. Tools that I should have used but have no idea about.
For example, the Limiter. Never touched it, and I applied it to The Wind, The Stars. Seems to bring up the softer bits and increased the gain so that it's near 0dB.
More to learn, more to learn.