See how to unlock all characters. There are specific articles for a few characters though, including Dry Bowser, Rosalina, Bowser Jr and Toadette. Keep playing and soon they will pop up.
You might find this slightly tricky, but it is possible! Just film yourself as one character, then stop the camera, cut away, and film yourself as another character. You can...
Show him that you are honest by keeping your words. We all make mistakes but how we reform those mistakes is what defines us. For now, try to live up...
The next safest surface would be a room with carpeted flooring. That way if you fall it won't hurt as much. Place pillows around you to soften any falls.