The only thing that I'll add is what smoky ghost said, Follow through and keep aiming until the arrow hits the target. If you aren't doing this then you may be dropping your bow to quickly and this could cause you to hit low and be inconsistent. Following through is one of the biggest things that I struggle with myself!! Follow through is very very important. Also, your poundage may be a little high, you might want to check that. You should be able to draw straight back slowly and smoothly, If you are pointing your bow straight up in the air and having to jerk the string back to get it drawn then the poundage needs to come down some.