Your best option is to consult with a criminal defense attorney in your area to help with negotiating a reduced charge with the prosecutor. Although you were not technically intoxicated (.08 or above), you were not to be in possession or under the influence any way as a minor, let alone operating a motor vehicle while under the influence. Because of your age and if this is your first offense, you may be able to have this charge reduced to a Minor in Possession charge and have the OUI charge dismissed. This will lessen the impact the OUI charge will have on your criminal record as well as your driving record.