Some correction with midlines can be made with veneers or crowns, however doing that may produce an asymmetry somewhere else, and maybe not worth it.As far as orthodontics, to move your midline may take at least one extraction, and 2-3 years to correct, and has the downside of root resorption.Many cosmetic dentists feel that the actual midline is not a very important issue. Rather, if the teeth are all parallel with the face and in proportion, most people won't even notice. You are probably being a bit too critical of yourself. Case in point, Tom Cruise has one of his central incisors precisely in the center of his face, under his philtrum (center fold in the upper lip). I don't think he has missed out on any career moves or social engagements because of that. Also, Cary Grant only had one upper central incisor, and that one (again) was in the middle of his mouth. Veneers could better align your teeth, correct the color, shape and symmetry. So that might be a good move for you. However, I would strongly advise you not to spend a lot of time, money and effort trying to correct your midline just so it perfectly aligns with your lower teeth. Along with any treatment there could be some down side risk of things actually looking worse.