Look at yourself in the mirror and ask yourself that question. And whatever your answer is , is all that matters. Asking what you need to work on is a very general question because beauty is in the eye of the beholder and everyone has their own personal preference. There is not one definition of beauty. We're all beautiful to someone and all ugly to someone however what matters is , is that we love ourselves first. Do not come online asking for a strangers opinion. If you rely on others opinions you will find yourself always insecure and worrying and will never have confidence or the opportunity to use your own opinion and apply it to yourself.