An artist should spend his artistic career expunging from the work everything that he recognizes as a habit. If he finds a neat way of doing something, instead of using the trick again, he must refrain from ever doing so. He must cast it out. A particular brushstroke or a figural gesture, or whatever. Comic books are entirely made up of this sort of thing. I have a pal who loved the way Berni Wrightson drew the strings of saliva stretched between upper and lower teeth, so he borrowed the device and still uses it forty years later.
Other quotes from Eddie Campbell.