How can I get a sharp nose tip and bridge without an kind of surgery? (photo)

Adding fillers to somebody's nose would only lead to a larger and easily appearance. If you have severe dissatisfaction with the appearance of your nose, please consider meeting with several reputable rhinoplasty specialists so you can see what to expect after the surgery. I hope this helps. Sincerely, Dr Joseph

On review of the picture you have a short, low, flat and wide nose that is the typical "Asian"  nose. By lifting the tip, creating a Supra tip, elevating and contouring the bridge all this easily accomplished with fillers, preferentially permanent fillers, you would see a nice improvement with a nose that would look significantly higher and thinner. This is a procedure that was popularized by a Brazilian surgeon many years ago and that we perform routinely with high patient satisfaction. 

I recommend getting a formal evaluation with a cosmetic dermatologist to go over your desired results. Facial fillers (voluma, restylane, juvederm) along with Botox can be used to improve the symmetry of the nose, bridge and lift the tip. However, surgery would be needed to improve nostrils or overall shape. See an expert. Best, Dr. Emer

Your nose could definitely look more contoured without surgical work. Instead of a surgical nose job, you could opt for  fillers on the bridge as well as the tip of your nose, doing so would lift and enhance the bridge.  You will also need Ultrasound Radio Frequency on either side of the tip of the nose to reduce the bulbous tip. A combination of the said treatments will make your nose much more contoured without appearing bigger than what you currently have. You can also have the upper part of your nasal labial folds injected with fillers, to reduce flaring of your nostrils.