So many people keep asking me this very question.
After I select the clothing style for a character I simply figure out the colours and the composition for that character and try to spread it throughout the environment she is set in.
I'll twirl the camera around the character to get the best possible pose and angle for every scene and for different effects with each composited image I spy on some motiongraphic sites for inspiration.
That's basically it. Was that what you meant by the question?