Should I bring in a photoshopped picture of myself for my rhinoplasty consultation?

It is acceptable to bring your own photo-shop picture of what you're trying to accomplish. This is a simple way to communicate with surgeon what  your goals are. The surgeon's office will usually perform a better version of the computer imaging. Since rhinoplasty is the hardest operation to perform in the entire field of cosmetic surgery, choose your surgeon very wisely based on experience

Rhinoplasty can change the shape and look of
your nose, whether that be to make it thinner, flatter, upturned or smaller
however it is unrealistic to pick a celebrities nose and expect it to be
transferred and created on your face. A plastic surgeon can achieve a certain
result but cannot guarantee that it will look exactly like that of a celebrity, another person or photoshop generated image.At my clinic we offer a 3D imaging service as part of our surgical consultations, this involves sitting with the operating surgeon and by taking a number of photographs we can create realistic before and after photos of what surgery can achieve. 

I would suggest that you book a consultation
with a plastic surgeon where you can discuss what options would best suit your
face and appearance for the look that you want to achieve.

No, most rhinoplastic specialists do have software that is more specific for aesthetic surgery than generic Photoshop..You can can bring it along, but you should develop a special photo with both your input and the surgeon's