Can't see sides of teeth - Is there any way to make my left and right sides visible? (Photo)

Thank you for the picture and question.
Short answer is yes! 
I would recommend seeing an orthodontist to fix your alignment. It looks as if your upper front teeth are also pushed out and overlapping and the side teeth are slanted inwards.  The position of the front teeth can cast a shadow blocking the side teeth from being viewed. With everything properly aligned, you can create a wider smile.
Another option is getting porcelain veneers on your upper 8-10 teeth. This is a way to instantly fix your smile without having to wear braces or Invisalign. With veneers, you can buildout the side teeth giving you a wider smile as well as creating a more symmetrical smile. Veneers can also be used to give you a whiter teeth that will not discolor or stain over time.
Both options are good, you just have to decide whats best for you!

You should consider orthodontic treatment, either traditional braces or Invisalign treatment, to straighten your teeth. This will make your front teeth stand out less as well as possible broaden your smile. If your front teeth were aligned properly, your side teeth would look more proportional to your front teeth.

I would recommend a consultation with an orthodontist for braces or Invisalign to correct the alignment of your teeth. Some teeth contouring can be done afterwards to improve the shape of the teeth if needed. Another option is veneers to improve shape and symmetry of your teeth.