A book featuring a marker-based method of sketching for beginners as well as advanced design professionals to produce finished sketches of exactitude and polish. The practical techniques simplify the construction of interior space and show how to achieve verisimilitude of surfaces with a minimum of technical skills. Arranged in logical sequence of mastery there are twenty-five step-by-step demonstrations of sketching spaces and individual details. Information covers methods to increase speed in sketching, advise on materials needed and how to create five kinds of perspective and plans.