You've taken the first step to keeping your baby running smoothly. From now on, clean her often. One trick I learned from a Bernina repairman, take a q-tip and put one drop of oil on it. Then clean the machine again. You'll be surprised how much more lint you will get out. Be sure to avoid the areas the manual says not to oil. Be sure to only use sewing machine oil. Good rule of thumb, check how dirty the bobbin case is every time you change the bobbin. It only takes a few minutes to clean the machine, and makes her purr afterward. Be sure to pop off the throat plate and clean under the feed dogs.
Never use canned air.