i'm a shooter too...the way not to get blocked is when you shoot, while in the air trry to pause in the air for as long as possible(practice is required obviously) so basicly try to get hangtime while shooting. Also shoot at your peak, when your in the air shoot when your about to fall back down from your jump.

all this requires practice, just go a court and start shooting from a close range where you can do everything i told you to and start to increase the range as your get used to it

also jumper higher doesn't mean you won't get blocked, hangtime in your shot is what matters...look at Kobe or MJ they hang in the air for like 3-5 seconds when they shoot over someone.