Design Sketches | HakanGursu
Design Sketchbook II on Behance
Backpack Sketches by Daniel Valsesia at Coroflot.com
--dense use of black line with orange to create texture
Reflex Shaver by Jon Osborne IDSA at Coroflot.com
sketches. --- love the reflections and shading, especially the straight-lined diagonal marker strokes
Realistic render with an effective communication of materials and surface texture.