yeah..i get your intention^^
But, it so hard to explain thing...from my experience,
it's not exist something simple and accurate method about drawing.
give a concrete example, i till draw that work, i think about a flock of ideas and i tried look at various points of view,
and i've got past efforts of my life and know-how. outgrowth, in other words, "work" is that almost things unite into one.
To be short, it's no way to something method, just depends on only your self^^
I'm apologize gave a reply which was wordy and didn’ t answer the question. but this answer is all i've got.