Hi all, new to the board but not Bow hunting.

I have shot a few deer with my bow but I have this horrible tendency to shoot under deer. [:@]Seems as if I do it at least once every season and can't quit figure out what I am doing. I've notice that it seems to happen the most when I am in a sitting position. I'm guessing that I am dropping my arm but it doesn't always feel like it. It almost seems worse the closer the shoot. Once I shoot 5 to 10 times I seem to be able to quit doing what I am doing but it always creeps its way back into my form. Any suggestions, mental things to keep in mind. By the way, did it again last night. Hey, wouldn't be right if I didn't do it at least once a season although this is a tradition I'm willing to let go!! lol

In advance thanks for the help

Tazman-j