To remove unwanted objects, select the 'Remove' tool, then highlight the area of the object you want to erase. After that, tap 'Apply' to see the changes reflected in your photo.

Yes, you can undo changes by using the 'Undo' option, which allows you to revert to the previous version of your photo. Just look for the undo icon in the editing interface.

After removing an object, you might want to adjust the background. Use the 'Clone' or 'Stamp' tool to fill in the area left behind. Carefully select a similar part of the background to blend seamlessly.

Yes, you can use the app’s features on existing photos. Simply open the gallery section, select the photo you wish to edit, and apply any tools or filters available within the app.

To master advanced editing features, explore the tutorial section available in the app, which contains step-by-step guides. Here are detailed steps: 1. Open the app and go to the 'Tutorial' section. 2. Select a topic, such as 'Advanced Editing.' 3. Follow the instructions provided through the illustrations and interactive prompts. 4. Practice on sample images provided to improve your skills.