1. First, we will install the Features module using Composer, which will also download its dependency, the Configuration Update Manager module:

$ cd /path/to/drupal8
$ composer require drupal/features

2. Go to Extend and install the Features UI module, confirming the requirements to install Features and Configuration Update Manager as well.
3. Go to Configuration, and in the DEVELOPMENT section, you will find the link to access the Features user interface; click on Features:
   
4. Click on Create new feature to start making a custom Feature module.

5. Provide a Name for the feature, such as Content Authoring.
6. Optionally, you can provide a description. This acts as the description key in the module's info.yml.
7. Toggle the Content types grouping and check the Article and Basic Page checkboxes to mark them for export.
8. The Features module will automatically add detected dependencies or important configuration items to also be exported, such as fields and view modes:
   
9. Click on Write to write the module to export the module and configuration to the /modules/custom directory in your Drupal site.
10. Go to Extend, search for the Content Authoring module, and install your newly created module.