This was made for a single extruder to print multiple colours

Make sure Z-hop/Z-Line is on

Slice the 2 files separately. Make sure that they are in the same orientation and in the same place

Print Spaceship 1 first in your first chosen colour

Once finished,  change the filament (make sure that you keep the heat bed heated)

Print Spaceship 2 in your second chosen colour

Enjoy!