Create a small rectangle on your sketch. Fill it with texture lines (dots for stone, zig-zags for wood, circles for fabric). 07sketches teaches that you should never use more than 3 distinct textures in one view, or the eye gets overwhelmed.
The guide argues that texture changes behavior. Create a small rectangle on your sketch
Whether you are sketching on a napkin at a coffee shop or drawing a master plan for a high-rise, keep a copy of this guide handy. Remember: If you can sketch it, you can build it. zig-zags for wood