1. Listen to these masters inside AND outside of the studio. Great masters sound better everywhere, not just in the studio.
Mastering isn't just about getting music to sound better or louder in the studio, it's about getting it to sound great outside of the studio in the real world. Be sure to listen in at least 5 different speaker systems at low and high volume. Don't just listen in studio monitors!
2. After listening to your masters inside AND outside of the studio, if you're not in LOVE with your masters, click the revision link on the next page. The revision form GREATLY speeds up the revision process.