Refer to Bamingo Design's for print settings, which layers to add color swaps, etc.
-Optional-
If you'd like to use the coaster as an ornament, I've also uploaded STLs for an ornament loop and another cylinder to add as a negative part. In PrusaSlicer, add the negative part to the snowflake somewhere along the edge to make a cutout, then print the ornament loop flat on the build plate (brim recommended). Once printed, just glue the ring into the negative cutout you made in the coaster.
The author remixed this model.

The STLs were a bit rough along the outside, but now the edges look as a good as the rest of the model!