Re: 1911 POI low and left
As others have noted it is anticipation. Ideally you will come to the point wherein you instantly (like at the moment the shot is broken) know if your mechanics were correct, from there you will progress to calling your shot, tracking your FS through the arc of recoil, and finally pre-staging a trigger.
One drill that can help a shooter identify proper mechanics (assuming they can occasionally concentrate and make POA / POI the same)is to square up to the target at a reasonable distance (based on ability), line up the sights and then close your eyes. Really allow yourself to feel everything - how much tension do you have in your hands, elbows, and shoulders? is the tension pretty evenly distributed between the limbs?, are you leaning forward or neutral? can you really feel your trigger as you pass through the pull? what happened at ignition? did you feel the muzzle re-orient? what happened through the arc of recoil? when the gun settled, were the sights lined up - back on the original POA? If not, start thinking about why? Once you start to sense how your body moves and works with your eyes closed you can quickly understand and be able to correct errors with them open.
Pick up a copy of Brian Enos' book: <span style="font-weight: bold">Beyond Fundamentals</span>
Good luck