How do you get friends on Moshi Monster?

Just add them by sending them a friend request, which you need to know their username in order to send. So ask them!
You go on your friends tree in your moshi monsters home and on the side should say add as friend you click on that and add your friends name in it should come up and you press add you can send a message if you wanna to get you started add me mimosa2334 and sam47528596