Should I get my nose bone broken or leave it alone to get the best result? (Photo)

Thank you for your enquiry and sharing your photographs.
To a great extent, it depends want you wish to achieve with the surgery. In general, a somewhat narrower nasal bridge can be a way to emphasise the appearance of the eyes.
Computer imaging and simulation can help you understand better your potential changes although it is fair to say that from the front view they are not as productive as the profile simulations.
On the view from from the left hand side, the nasal bridge appears to have a small bump which is due to the asymmetry in the height of the dorsal aesthetic lines. It looks like the right dorsal aesthetic line is slightly higher.
When the nasal bridge stays the same but the nasal tip is narrower, on the oblique view it will appear that your nasal tip is less projected even if it maintains exactly the same projection on true profile. As a result, on the view from your left hand side, it is likely to appear that your nasal bridge bump is somewhat stronger.
If this is an element that you feel indifferent to, reduction in the width of the tip is appropriate. If you would like to maintain a straighter contour of the semi profile of the nose, correction of the nasal bridge shape would also be necessary.

Your photographs are limited. I do not have a proper lateral view. It appears you have broad bony base and a small dorsal hump. At the time of surgery, sometimes the bone can be filed, not necessarily fractured. However, sometimes if the base is narrow then the bone will need to be fractured. More photographs are needed to give you an accurate answer.

Best Wishes,

Gary Horndeski, M.D.