Had these two hit for centering. The 738 was labeled as low in frame. The A319 had no comment attached. I thought balancing it this way helps with the background and the height of the tail; especially from the angle it is taken from. Similar thought on both images. The 319 really looks well balanced as it is. If the fuselage is perfectly centered it will have the tail at the far top of the frame and feel off leveled.