Free users have only one creation available in which you can have up to 10 illustrations. In order to access a creation, you must click on Create New File, blank canvas and select a size.
If you return to My Creations section, you will be able to see two white boxes: one entitled Create New File and another one in blank or showing your previous creation.
Once you have created the first file, you must became a subscriber to create a new one. However, you may delete your first creation and then replace it with a new one.
Become a subscriter and have as many creations as you want for only 5 USD per month!