The Design of Design (Cambridge Engineering Series) A Book by Gordon Clegg www.amazon.com What the problem is
The preliminary sketch Among the best woodblock prints are many that seem not to have adhered strictly to the preliminary sketch. The sketch simply indicated a general direction, and in many cases was not used at all. Or it was even improved upon in the process of carving and brought vividly to life; the woodblock qualities of the print were accentuated and highlighted. Yanagi Sōetsu, Woodblock Prints BlueprintsHead and hand drawing