Can anyone help me with changing a player to a model?

I need help trying to change a player so when they join in they become an astronaut model. Can anyone help?

Right click on StarterPlayer. Then click on insert object. Then click on Humanoid. Next name the Humanoid "StarterHumanoid". Then go to Toolbox and choose a anything you want it to be. Then Put the thing inside of StarterPlayer and name it "StarterCharacter". Then you are done! Just test it.

Join the game in studio. While you're in the game, go to explorer, workspace, and then go to your username. Right click your name, and copy it. And now stop the game, and paste it. Enjoy!