if u want ur art to be more realistic,then the hair needs to be a little bit more messy (like normal hair) And i think u could draw something more than people,so u wanna improve ur art?open ur imagination box and let ur drawing run wild,do what u think is best,don't ask for help if u think it's perfect,peoples opinions don't really matter on here,as long as u think ur art is good.just practice and you will achieve any goals!:)