A Fishes way on a Player Sized Rocket!
This is not a 1:1 recreation on the one I built, it is to help you know how to build them (Low description because your supposed to use your imagination)
Tip 1
This is obvious but make a shape of a rocket with a terrain (like the rocket shown in the photo)
Tip 2
You can either make a booster by Terrain Blocks or make one out of props
Tip 3
Add little details, like spaceship suit, command center and anything you can think of!