Write examples in reduced scoring which illustrate the clarifying effect of vividness of timbre. Speculate into the nature of the "attributes of tone" and try out some contrasts that come to mind. Contrast of any kind will be increasingly recognized as a central orchestral resource almost as fruitful as orderly design in ensuring clarity.
The world of percussion sound, in particular, has a wealth of fascinating timbres that invite exploration. After hearing some percussion works of composers such as Chávez and Varèse, make experiments of your own in use of percussion timbre. Increase your knowledge about the percussive "attributes of tone" by trying out various opposites. Use duo combinations of pure percussion, or duo combinations which combine percussive and sustained timbres.