Feel free to make any other modifications or customisations. e.g. You can add a background colour or some more text/images. It's your app, design it to your heart's content!
If you have a connected Apple device, you can run the app on your iPhone. If not, you can run it on the Simulator. Remember, the keyboard shortcut to run your app is command + R.
NOTE: If you get confused about how to do any of the above, it’s all been covered in the last tutorial (I Am Rich) so you can always refer back to the previous videos.