On Sunday evenings in August, Animal Crossing: New Horizonsplayers can check out fireworks festivals and even make their own custom fireworks.

Players can submit their custom patterns to be shot into the air and displayed as fireworks by talking to Isabelle in front of the Resident Services building. Players can upload up to 10 designs, and they’ll fire off one after another in order.

A menu screen that shows uploaded patterns. the Polygon logo, as well as a photo of a possum are part of the group. Image: Nintendo EPD/Nintendo via Polygon

Note that these won’t completely replace all the fireworks shown at the festival. There’ll be regular fireworks as well, but your designed fireworks will display in a bunch. While they will go off in the set order you gave to Isabelle, where they fire will be randomized.

The patterns you upload will be cropped into circle shapes, so make sure that there are no important bits to your design in the corners. Designs will bold, different colors will look the best.

You can see an example of our four patterns in action below.