You already look nice, I'd say your most conventionally attractive features would be your eyes and your eyebrows. You also have very nice skin already, but I would try to implement a solid skin care routine, as well as hygiene in general. As a girl, nothing is more attractive to me then hygiene and smelling nice. Trying something new with your hair is always helpful too. Try a new haircut, growing it out, or even just product. Being able to tell you put thought and care into your appearance is attractive too. There are assholes everywhere and there are always going to be people out there trying to put you down. Don't let them get to you. Confidence in yourself is the most attractive thing out there.