To expand your Sim's house, open the Home Store, select the 'House' tab, and choose 'Upgrade' or 'Expand.' You'll need enough simoleons to purchase new rooms or features.

Completing quests is important as they unlock new features, objects, and relationships for your Sims. Quests provide goals and rewards, enhancing the overall gameplay experience.

Increase your Sim's relationships by having them interact frequently. Engage in conversations, share hugs, or throw parties. Regular interaction enhances friendship and romance levels over time.

To change your Sim's appearance, go to the 'Create a Sim' section via the menu. You can adjust facial features, change hairstyles, and modify clothing. This allows for personalized and unique Sims.

If you run out of time on a quest, you can try again later. Focus on completing smaller tasks first, or use time boosters from events or in-app purchases to speed up processes. Steps: 1. Open the quest menu. 2. Review remaining tasks. 3. Focus on immediate objectives. 4. Use time boosters if needed.