I have an open bite and I think it's effecting my appearance. (Photo)

A quick look at your pictures leads me to believe you probably have a tongue thrust of tongue protected swallow.  The position of the tongue prevents teeth from properly aligning themselves.  Orthodontics without correction of tongue posture will likely relapse!Oral Myofunctional Therapy may allow the open bite to close on it's own.  You also have a narrow maxilla that tends to trap your jaw back and are probably an excellent candidate for Epigenetic Orthopedics/ Orthodontics with the DNA Appliance.Do you also snore or have sleep apnea?Do you have a forward head position?  These are both symptoms of a small airway.  This problem typically begins at a young age and has a high association to ADD and ADHD from airway issues in development.Ira L Shapira DDS, D,ABDSM, D,AAPM, FICCMOPast Chair, Alliance of TMD OrganizationsDiplomat,  Academy of Integrative Pain ManagementDiplomat, American Board of Dental Sleep MedicineRegent & Fellow, International College of CranioMandibular OrthopedicsBoard Eligible, American Academy of CranioFacial PainDental Section Editor, Sleep & Health Journal
Member, American Equilibration SocietyMember, Academy of Applied Myofunctional SciencesMember, Academy of Cosmetic Dentistry

I suggest having a consultation with an orthodontist. biting on only one or two teeth on either side can be stressful on your teeth and the joint. Orthodontics and possibly jaw surgery will correct this problem.