You can earn coins by completing daily challenges, participating in events, and winning design contests. Additionally, visiting and interacting with other players' designs can also help you accumulate coins.

To participate in design contests, you need to select the contest from the main menu and choose a room type. Then, use your available items to create a design and submit it within the contest timeframe.

Unlocking more furniture requires leveling up by earning experience points through designing rooms and completing challenges. You can also purchase items in the shop using your coins or design tokens.

Once you submit a design in a contest, you cannot change it. However, outside contests, you can revisit any room and adjust your design by selecting the room from your profile and editing it freely.

Design tokens can be used to purchase premium items or unlock exclusive content. To use them, follow these steps: 1. Open the shop. 2. Browse available items and exclusive features. 3. Select the desired item and tap 'Buy with Tokens.' 4. Confirm your purchase, and the item will be added to your inventory.