Another cool way to customize your terminal is to launch neofetch or similar application at launch. This is very simply done if you are using the default zsh shell by editing the hidden file .zshrc in your home folder.
In your home folder edit .zshrc in your text editor of choice, for example using nano:
nano ~/.zshrc
Add the following to the end of the file:
neofetch
Save the file and restart your terminal. You should see neofetch immediately run, which is a nice customization feature.
You can undo this change by simply deleting the line you added to .zshrc in your home folder.