pitching workouts

I am currently a sophmore in high school and i only through 65 mph I am looking for a workout to help improve my velocity. the only way i survive pitching is by the batters either completely missing due to them not being able to adjust to my speed or wiffing at my curve which i live and die by so i am looking to improve my velocity and tips are appreciated thanks

Check out TuffCuff on this very website. Steven updated it for 2012!