Some Concept Sketches collection Some Concept Sketches collection from Jan Koutnik Some Concept Sketches collection Some chosen sketches I created over the years.There are also a few sketches for projects I've posted here in the gallery. gLike Some Concept Sketches collection Some chosen sketches I created over the years.There are also a few sketches for projects I've posted here in the gallery. Concept Art Furniture Design Illustration Product Design Residential Furniture Interior Design Sketching Sketch Share R 7 n Available Freelance Jan Koutnik Ing. Brno, Czech Republic Follow Contact