Most people are too concerned with their own lives to pay serious attention to others. Any perceptions you're worried about are purely superficial. While you're in public feeling anxious and that all eyes are judging you, everyone else is too preoccupied with thinking what they should eat for dinner, if they'll be late for their appointments or picking their kids up or if they need to walk the dog and do whatever other tasks. Turn the tables for a minute and look at it from your perspective, when you're out in public do you really care about other people for any longer than the 5-10 seconds that you see them?