Overpair play is truly one of the most important aspects of your game. The spots you get in can be very tricky. Some things to keep in mind:

1) The majority of low stakes players do not raise draws.
2) What is your image?
3) Have you seen villain showdown a hand after raising a cbet?

In general at low stakes a raise = better than 1 pair. If you always stack off with an overpair then you don't really make any money in the longrun when you stack other people's overpairs.