Collections are automatically sorted in an order of when they have been created. However, you can change the order to your liking by following the steps below.
1. Click on your profile photo icon at the right corner of the page
2. Select “My Page”
3. Scroll down to your collections and click “Edit”
4. Click on next to the collection you’d like to move
5. Drag and drop it to a position
6. Click “Save”