How difficult is it fix a bulbous tip? (Photo)

Click on the "Web reference" link, just below my response, or go here:
FacialSurgery.com/RealSelf/RealSelf_macgirl37.html
I made a computer morph of your nose, and an animation of the morph, to show the changes that are possible for your nose in truly expert hands.I narrowed the tip of your nose. Also, however, I elevated the tip upwards, and I brought the entire nose back closer to your face. When the tip cartilages are strong enough to make the tip wide, like yours, they are usually strong enough to hold the nose out forward from the face more than we might like, and they tend to hold the tip down, making the nose tip look a little droopy. Perhaps you can see those changes best in the animation. The woman in the short video above had all three of those features, too.I'm not in love with my morph, but only because it's hard to keep things looking natural on the computer when you change the "pre-op" photo that much. 
You should understand that the changes I demonstrated in the morph require advanced techniques, techniques that most plastic surgeons cannot handle.  Be sure to read the section in the "Web reference" link on how to stay out of trouble while searching for a rhinoplasty surgeon. You should only have surgery if you are able to make yourself very confident in your surgeon's skills.
I'd love to hear what you think of the morph. Did it seem to address your main concerns?
Your nose is also a good example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. When you see his goals, you'll know whether he has an eye for a beautiful nose, and whether he shares your opinion of what constitutes a beautiful nose. You'll also know whether the changes he proposes are enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. But remember, you're not hiring him for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.
In your case in particular, you need to find a surgeon who understands all of the issues I mentioned, and how they fit together, and who can actually accomplish them in surgery. 

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.
Harvard-trained plastic surgeon

Improving a bulbous tip is a  frequent request of patients wanting
nasal refinement. It is possible to improve the cosmetic appearance of the tip
alone without altering the rest of the nose in some patients. Whether the
optimal option in your particular situation would be a tip rhinoplasty alone or
an artistically performed natural appearing full rhinoplasty would best be
determined at a consultation. Either procedure can be performed with a closed
or open approach.
Following the advice from a surgeon on this or any other website who proposes
to tell you exactly 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
operative procedure would not be in your best interest. I would suggest you
find a plastic surgeon with extensive nasal surgery experience who is certified
by the American Board of Plastic Surgery and ideally a member of the American
Society for Aesthetic Plastic Surgery (ASAPS) or a facial plastic surgeon (ENT)
that you trust and are comfortable with. You should discuss your concerns with
that surgeon in person.
Robert Singer, MD FACS
La Jolla,California