mountainman's advise is right on. Centered and relaxed will solve the majority of problems archers struggle with. Each coach has his own advise as to the proper foot and shoulder position. For instance Larry Wise likes the archer to have all bones in the left arm in perfect alignment with one another and does not preach much about being open with the target. Rick McKinney on the other hand tends to teach a more open stance and spends less time worrying about the left arm. Both world champion archers, both great coaches and both have my utmost respect. The one thing they both agree on is "Center", "Balance" and "Relaxed"