Would I look too different after a nose job? (Photo)

A conservative rhinoplasty with hump removal, refinement of your tip, possible narrowing of the nasal base etc. will give you a more attractive than feminine looking nose.  It will not greatly alter your appearance  but will make you look more attractive 

The areas that you described and would
like improved can be addressed with a subtle natural appearing rhinoplasty
performed by an expert artistic plastic surgeon with extensive rhinoplasty
experience. No one ever "needs" a rhinoplasty. It is an elective procedure
and only you can determine if your nasal features concern you enough to do
something about improving the cosmetic appearance of your nose and whether it
would be worthwhile.

Keep in mind, that following the
advice from a surgeon on this or any other website who proposes to tell you
what to do based on limited 2 dimensional photos without examining you,
physically feeling the tissue, assessing your desired outcome, taking a full
medical history, and discussing the pros and cons of the proposed operative
procedure with you and your parents may 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. Additional information
about the procedure will help you decide if it is a procedure that you want to
pursue.

Robert Singer, MD FACSLa Jolla, California