Okay! *whew* Instead of walking up to the line and stopping, then pulling the ball back and throwing, do that mid-step. I think part of the problem is that you're losing momentum and having to create a lot more by just standing there. So drop your ball back like a step before you get to the line, then release the ball. Since you're right-handed, you want your left foot to be forward. It'll be a bit more natural, once you get used to it.

Oh, and lining up with those dots back by the ball drop helps too. It gives you a straight line to walk towards, and those arrows help aim your ball. I know that my ball doesn't always end up near where I think I'm aiming, but that's probably because my body moves away from my arm. I need to work on that!

I learned this in a bowling class, and that helped my game a lot! I sucked before I took those 3 semesters :D