Although your picture is not very clear and may be distorted by you leaning to your left, it appears that your lower jaw is asymmetric to the left and that your upper teeth are lower on your right. This condition can be caused by a crossbite of your left back teeth from childhood causing you to habitually bite off to your left. The ideal solution is complex, as this condition can cause skeletal disharmony and/or TMJ dysfunction as well. The ideal solution would best be handled by a specialist in orthodontics who also has many years of successful treatment of TMJ disorders as well. As you can see, the idea solution may be very complex, but well worth it in the end, but definitely not for the amateur. If you just want a much quicker cosmetic fix, the less involved cosmetic dentistry could be your answer.