Left side of my face appears bigger/tilted compared with my right side, how can this be fixed? (Photo)

Most people, even some of the most beautiful celebrities, have some natural facial asymmetry.  Photos capture our faces in 2 dimensions only and can exaggerate this asymmetry depending on the angle, lighting, and distance from the camera lens.  If it is something that bothers you, then dermal fillers could be a good non-surgical option. 
Best, 
Blair Armstrong MD

Thank you for your question and photo.  Most people have some degree of facial asymmetry.  In my experience, Radiesse, Restylane Lyft, and Juvederm Voluma are the best fillers to correct this asymmetry.  An in-person consultation with an experienced injector can help provide more information.

Everyone has a little facial assymetry, but if it bothers you, fillers are a easy corrective measure.Fat transfer, Sculptra and Radiesse are all great higher volume products.Best. Dr Brecht