Fixing hanging columella make nose appear wider/expose nostrils? (Photo)

Hello and thank you for your question. Based on your
photograph, this can be fixed.  It is likely to caudal portion of your septum which is causing this.  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

It appears that your concerns are valid. To achieve your goals you would need a Rhinoplasty to address the entire composition of the nose. When we alter one aspect of the nose - all of the other relationships are changed. So, yes- your goals are achievable - in the right hands- by a very experienced Board Certified Plastic Surgeon. Costs will vary according to many many factors, see the link attached:

You don't have a hanging columella as much as you have alar retraction anteriorly which is revealing a lot of your columella.  It is also what makes your tip look long, as if it is drooping down, when you smile ( the infratip lobule is out of proportion).  I solution is the address the lower lateral cartilage lateral crus structure and use alar rim grafts - I would not reduce the caudal septum, that will make your nose look too turned up (over rotated).