For those of you who are into producing, this is a thread where you can share any tip you have regarding music production. Who knows, it might help other producers as well. Please put in bold the main point of the tip. You know, little things can make great changes.
EDIT: Please do not ask for requests on this thread. Sorry I did not make this clearer the first time, but this thread was meant to be a long list of tips. If you have certain questions, please post a new thread, as that will provide more focused answers to your question.
When mixing a song, always remember that you can always make one track sound louder by pulling down the faders of the rest of the tracks. This helps you avoid having all of your faders eventually climbing to the top of the board and getting a loud, dirty mix. (unless that's what you want, but there are better ways to sound loud.)