To start using iCloud Drive, make sure your device is set up correctly and it will appear as a location in the Gallery sidebar automatically. Please check the following:

1. You are signed into an active iCloud account on your device.
2. You have enabled syncing for your device by going to Settings > Apple ID > iCloud > iCloud Drive and turning on Sync This iPad/iPhone.
3. You are using Concepts version 6.12 or later.

For a visual guide on syncing your projects with iCloud Drive, please watch our tutorial.