A good gun presentation is crucial to solid shooting.  It involves pushing the gun out to where your eye is on target.  In this video you will notice that Dave Sevigny does this every time he changes directions.  This makes the first shot true to where you are looking.  You can practice this at home with a post it note on the wall.  With the gun UNLOADED work on presentations from different points in the room.  When you get this fundamental down you will see your shooting drastically improve.