to take your fingers and try to pull the bristles off the wall.
if a fuzzy or a bristle happen to get into your beautiful painting, the easiest way to get it is to take one finger and swipe it with a good amount of pressure. do it as soon as you see it. if you do not, it can dry into the paint and then you have to pry it out and sand and re paint. have one of your damp flannel cloths ready to wipe your painted finger.
when you buy quality brushes, make sure to clean them properly after use, air dry them and store them in their original 