Rules and guidelines are great. Remember that they are just a starting point. If you like to make this or that change to your tracks because you feel that it improves the final product, but the “tried and true” rule book doesn’t mention your technique, don’t worry! Go ahead with what works for you. There’s a lot of precise science and engineering with audio mixing, but there is still a hefty serving of art.
You can read more here: http://therecordingrevolution.com/2012/12/31/if-it-seems-to-work-do-it/