RE: Analyzing the miss...
Any time you miss your shot (no matter what size your target is) you should think about what you did to miss. The key to being a great shot at a known distance is to do everything exactly the same why every time. Once you start getting close to that you will develop a feel for your shot and as Bob said, you will know whatyou did wrong before the arrow hits the target. I like one arrow practice rounds, but the best practice I have found for developing that "feel" is blind bail shooting. Give that a try, it will really make you focus on the feel of your draw, anchor, and release. It also does wonders for those that are having any kind of target panic.