Please share this answer with your parents if you are under 18 years of age. I have performed many Rhinoplasties on patients under 18 years of age however, they (and you) would need to have the consent of your parents to do so as this is the legal age to give consent for surgery.
Silicone nasal implants can be removed in the office under local anesthesia. As long as your nasal bridge and tip were not significantly modified during your procedure the shape of your nose should be very similar to the pre-surgery look once you've healed. I hope this information is helpful for...