แผ่นภาพร่างสตอรี่บอร์ดดินสอแบบหยาบ

An extremely rough, messy, dirty [pencil storyboard sheet]. Scribbled thumbnail sketches looking like they were drawn in 10 seconds, featuring rough gesture sketches, loose scratchy graphite lines, and barely readable shapes. Complete doodle-level roughness and raw compositional planning.