How can I improve the shape of my nose? I have a triangular nose shape from the side. (Photos)

The shape of the the nose is the shape of the underlying archetecture. The bone and cartilage. To change your nose, I perform what I call a structured rhinoplasty.  I reduce certain areas and augment other areas like the tip to give a better shape and definition.

Hello and thank you for your question. Based on your
photograph, you may benefit from a tip refining rhinoplasty. Your surgeon can
accomplish this by trimming, suturing, and reshaping the cartilage in your
lower nose.   Make
sure you specifically look at before and after pictures of real patients
who have had this surgery performed by your surgeon and not just a computer
animation system. The most important aspect is to find a
surgeon you are comfortable with. I recommend that you seek consultation with a
qualified board-certified plastic surgeon who can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D. FACS
Harvard-trained plastic surgeon

Your nose could be improved with rhinoplasty, which would give permanent improvements in symmetry and profile. When you meet with a facial plastic surgeon, he or she will consider your nose in balance with your other features. You can bring some photos of noses that you think would be flattering to your face and these can be discussed.  I hope this helps.