Just practice dude, practice...i play ball every single day for about 3 years now. Im like you, ballin' is what i live for...
Man at the beginning i was the worst in my school, i couldn't even hit the rim, couldn't dribble correctly. But now, i beat guys that are 10 years older than me...my shooting form is correct, my handles are fluid, and my vert has increased for more than 20 inches...
But you have to be PATIENT!!! Just work hard and you'll achieve your dreams...