There are several different ways to print this model:

the first way would be do print it standing up with supports (I have included a 3mf with supports already added), but the supports can be somewhat difficult to remove.

You can also print it with no supports by printing it in two halves, the filled half has been optimized for ease of printed but does not look as nice as the horizontally cut half.

When printing the supported snowflake or the horizontally cut half it is important to keep all print speed at 50mm/s or less, otherwise the model will wobble and possibly come off the build plate.