I'm not sure if this has been mentioned, but you will have to be sure of placement as well. Hitting the deer is one thing, getting a kill shot is another. Take a look at some diagrams of deer s vital organs, so you know exactly where to aim.
Another thing that I think that helps are 3-d shoots. If the shoot is a good one, they will have shots where the deer are broadside as well as quartering away. It helps you know just where your arrow will hit if you shoot at a quartering away deer. Some 3-ds even have treestand shots, where you are shooting down at deer. I think once you have a bow, and are ready to shoot, practice is the biggest thing, like tazman said, know your pins, know your comfortable distance, and know your target and you will be dragging.
hope this helps

Jennings Buckmaster Bow
.50 Cal Thompson Center Renegade