strokes gray pattern texture repeating seamless monochrome. thin lines. monochrome black white. hand drawn. handmade.

abstract background black brush collection concept creative design dirty distressed drawn element graphic gray grunge hand handmade icon illustration isolated line lines logo medical modern monochrome paint patient pattern pencil repeating rough round seamless shape sign sketch stamp stroke strokes style stylish swirl symbol technology template texture textured thin trendy vector wave white your zebra