architectural sketch style clean hand drawn linework with thin black ink outlines slight line variation as if drawn with fineliner minimalistic and precise soft watercolor style shading with translucent washes in muted natural tones light greens white background with subtle watercolor clouds and shadows limited color palette no heavy contrast combination of technical accuracy and expressive hand sketch flat perspective shading no photorealism calm professional architectural presentation style similar to competition or planboek illustrations style transfer only change linework shading and color treatment without modifying the building design in any way no changes to shape scale facade layout openings material
