Headbutt Caused Bump on Nose. Can Only Be Seem From One Side Of My Face. What Can I Do?

It sounds like you sustained a nasal fracture at the time of your injury resulting i the bump on your nose.9  It can be corrected with a rhinoplasty most likely.  It will probably involve removing the hump with either a file or a chisel , as well as refracturing the nose  Specifically what needs to be done could be determined in a consult with an experienced plastic surgeon, preferably one with extensive experience in rhinoplasty. 

Bump on the nose and treatment will vary depending on many factors and if it is done under local or general anesthesia, See an experienced surgeon for the best result.

It is possible to have a bump on your nose that is only visible from one side of the face or from certain views.  It is difficult to give any type of pricing without having properly evaluate you first.  Please consult with a board certified specialist who can best assist you in achieving the goals you desire.  Depending on your specific situation, there may or may not be a component of insurance.