Dic: draftsmanship (draughtsmanship)

1. N-UNCOUNT | Draughtsmanship is the ability to draw well or the art of drawing.

2. draftsman (draughtsman) : N-COUNT | A draughtsman is someone whose job is to prepare very detailed drawings of machinery, equipment, or buildings.

... Cobuild

3. draftsman:

(1) a person who draws plans of structures or machinery
(2) a person who draws up legal documents, speeches, etc.
(3) an artist skillful in drawing

.... http://www.yourdictionary.com/draftsmanship