Instructions
Visit Arte's Curio Shop every day. If you do not visit Arte frequently, he will not remember you. Even if you choose not to purchase items from his shop on a daily basis, you should visit the Curio Shop and explore the rare items he has available for purchase. He will slowly begin to recognize and remember you, and his greetings will become more friendly in the future.
Purchase items from his Curio Shop. Though Arte will begin to recognize and remember you each and every time you visit his shop, your friendship level will increase with Arte if you purchase merchandise at his store.
Hunt for gems every day. Each time you enter the Gem Hunt, Arte will host you. His friendship level with you will increase if you choose to hunt for gems on a daily basis.
Tip Arte once every day. Click on his tip jar and give him a KinzCash tip. The maximum amount you can tip Arte is 100 KinzCash. Tipping Arte will advance the friendship process, but tipping him more than once a day will not speed up the process. Tipping him too much can have a negative effect, and he may think you're trying to "buy" his friendship.