Google Codelabs provide guided tutorials that show how to build small applications that use a specific technology: there's one very clear and easy-to-follow tutorial that uses a web service to retrieve data and show it on a map. This could be a perfect tutorial to follow to add new features to the project you've built in this chapter. You can access the codelab at the following link: https://codelabs.developers.google.com/codelabs/google-maps-in-flutter.
Similar to Google Codelabs, but specific to Flutter, are the Flutter cookbooks: there is one that shows ways to use the camera. You can find it at this address: https://flutter.dev/docs/cookbook/plugins/picture-using-camera.
You can find an example of an app using the camera plugin extensively at https://flutterawesome.com/a-simple-camera-app-built-with-flutter-and-using-sqlfite-for-sqlite-storage/.
There...