I've seen it done a few times. For instance, a blotch of wet black ink still creeping is led out into the branches of a plum blossom branch. As the ink sinks into the paper, the peddles are added.
I was with George Xu the other day and he mentioned a Chinese Idiom which I didn't quite catch in Chinese. He said it meant, "A Wild Man Beats the Master." In other words, for some reason a completely wild man with terrible technique, who kicks in the wrong place and loses his balance...can beat the trained master of martial arts. It is as if the wild man beats the master because he does everything so wrong, he is unpredictable and unselfconscious. (He is not in his own way--he is not his own obstacle.)
Does this suggest a way to practice? Can you find a martial arts way to spill the ink?
(I accidentally got the cool photo of the ceramic cup/cans from a google search for "spilled ink demo" but the site itself (geekologie.com) was too big for my computer so I don't know the back story, still it is a cool picture. If anyone figures it out please add the artist's name to the comments.)