Answer:
To start, try a couple things:
1. Reset the iPod by holding down the power and volume up button for a few seconds to first turn it off, then hold the power button for a few seconds to turn it back on. If the problem doesn't resolve itself, try:
2. Go into settings and turn off auto-brightness. This may help the issue. Also, sometimes turning your screen brightness high up reduces the frequency of the flickering. If that doesn't work try taking it to an Apple Store