hand drawing crayon doodle strokes, pencil charcoal squiggly lines, chalk swirls, underlines

pencil scribble brush line doodle crayon zigzag scrawl squiggle rough charcoal texture swirl underline squiggly vector stroke chalk coal wavy curve thin strip grunge marker pen graphite hand drawn scratch paint strike sketch black graphic paintbrush set smear background strikethrough isolated design art illustration children graffiti element pattern border brushstroke