Most Helpful Guy
You're young, thin, fit, and probably the best you'll ever look your whole life. So, relax and appreciate your body and yourself. What stands out to me is your face, specifically, the indentations around your nose and mouth, and your lips and chin. They're signs of anxiety, nervousness and worry. Then, your eyes are fake-happy/excited, with a flat unexpressed forehead.
So, you're nervous. You lack confidence. Why? You're young, you're thin, and you're fit. You have nice skin. You have nice legs. You have a nice stomach. Work it. Love yourself. Stop looking at all thing things that might not be "perfect," and putting yourself "down." Start looking at all the positives you "do" have going for you, and love yourself for being "good."
"Don't let the perfect become the enemy of the good." (Voltaire)