What can I do to fix a protruding front tooth? (Photo)

The protruding of this front tooth is very severe.  You would have to be very aggressive in the amount of tooth structure removed for a natural look.  Your best option would be full bracket orthodontics or Invisalign.  I know it would take a considerable amount of time, but would be worth it in the end.  Good luck.  

Judging from your photo alone, your palate is quite narrow and has resulted in crowded front teeth.You make a good candidate for invisalign, some expansion of your upper arch will create space to accomodate for straight front teeth and a fuller smile.Good luck! :)