[Mr.HOLMES]

I would say to get contrast clever use of reverbs delay and paning is the thing to go during mxing.

I am still learning on that too with every mix I am improving it.
Listen to some old Beatles stuff to hear unusual paning.... try to do it like this you will see what happens. Have a lissajous meter aside when mixing...see what happens to it when using reverb or mixing hard L M R ...my 2 cents