The tip of my nose is crooked. Is this fixable? (photos)

The nasal areas that you described and would like improved can be addressed
with a nasal surgery (rhinoplasty) and a possible septoplasty which are
typically done at the same time. A natural appearing nose can be achieved when
the procedures are performed by an artistic plastic surgeon with extensive
experience in nasal surgery.
Keep in mind that following the advice from a surgeon on this or any other
website who proposes to tell you exactly what to do based on a limited two
dimensional photo without examining you, physically feeling the tissue,
assessing your desired outcome, taking a full medical history, and discussing
the pros and cons of each operative procedure would not
be in your best interest. I would suggest you find a plastic surgeon certified
by the American Board of Plastic Surgery and ideally a member of the American
Society for Aesthetic Plastic Surgery (ASAPS) or facial plastic surgeon
(otolaryngologist) that you trust and are comfortable with. You should
discuss your concerns with that surgeon in
person.
Robert Singer, MD FACS
La Jolla, California

You have asymmetric tip cartilages which can be easily improved with a Tip Rhinoplasty.  This can be performed under local or general anesthesia. 
3D imaging will allow you to see how your tip could look after a rhinoplasty, so I would encourage you to see a trained plastic surgeon for a consultation.