http://www.musicradar.com/how-to/10-quick-mixercises-to-fight-your-sonic-flab?utm_source=Adestra&utm_medium=email&utm_campaign=17453&utm_term=1272274&utm_content=310866#

Good information. I think #2 is very important.

Great information.

I definitely support number 2, but also want to add number 5 to the list: (bulk up bass) "For dynamic bass with solid sub-frequency weight, apply a multiband compressor set to squash only 150Hz and below."

This in itself is a great tip. Works for many music genres.