How can my teeth be fixed? I feel like my smile is too narrow and not wide enough, can this be corrected? (Photos)

You have an orthopedic issue of an underdeveloped maxilla resulting in narrow six tooth smile.  This tends to come with narrow lips and neep nasal labial folds.
I would suggest looking into Epigenetic Orthopedics / Orthodontics with the DNA Appliance to orthopedically in three dimensions grow your maxilla.  Ideally this is done before age 7 but as an adult the DNA Appliance is the treatment I would utilize.
It is possible to do SARPE procedure which requires surgery but is much faster.  The DNA Appliance is Ideal but slower.
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 JournalMember, American Equilibration SocietyMember, Academy of Applied Myofunctional SciencesMember, Academy of Cosmetic Dentistry

Widening your smile is possible using orthodontics but the process in adults is quite unstable.
If you want to widen your smile predictably, without it relapsing (falling back to how it was), veneers, crowns or composite buildups are the only real options. 
Of the three, veneers if possible are the longest lasting and relatively least damaging option.
Good luck in your new smile
Thomas Dey, BDS MSc

A whiter brighter set of teeth will look wider and can reduce the dark corridor that makes the arch look narrow. the length of the teeth can be altered with enameloplasty. The broken tip can be repaired with nano ceramic composite filling to get a good contour without veneer.