How does one go about picking the right lines to define in their drawing? Al Hirschfeld, for example, in this drawing http://gamesmuseum.uwaterloo.ca/Virt...chfeld1984.gif defines a lot of lines on the jacket on the left, but on the right it's a more 'reserved' look (for lack of a better term right now - I'm tired).
Now, I know it gives off character greatly, but there's this problem I can't seem to kick out of my system from advice that my life drawing teacher used to tell me. That every line means something, and the artist has consciously depicted each of those lines.
That's fine, but what makes them decide precisely how many lines to display, for instance on the raincoat's sleeves? Why that many and not one or two less?
Or has this advice just got me into a bad habit of over thinking?