There are a few different ways that you can get a rustic look on your pottery. One way is to use a glaze that has a lot of texture to it. This can give your pottery an aged and weathered look. Another way is to use earthy colors for your glaze. Browns, blacks, and reds can all create a rustic appearance. Finally, you can add embellishments to your pottery that will make it look more rustic. Things like carved leaves or distressed details can really bring out the rustic vibe.