Shooting problem

Im 15 and 6'0 I play in u19 team . My biggest skill is shooting I play shooting guard in my team but i'm afraid to shoot i dont even attempt shots when i play pickup games I'm the most confident player on the court but even in team practice when we play i'm totally difrent player i dont have any confidence i dont shoot i just pass the ball. I know that i can shoot I work my ass off everyday. Let me know what i should do